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7261065 = 325723789
BaseRepresentation
bin11011101100101110001001
3111122220022100
4123230232021
53324323230
6415344013
7115501200
oct33545611
914586270
107261065
11410a389
122522009
131672cb6
14d70237
15986660
hex6ecb89

7261065 has 72 divisors (see below), whose sum is σ = 15205320. Its totient is φ = 3193344.

The previous prime is 7261063. The next prime is 7261069. The reversal of 7261065 is 5601627.

It can be written as a sum of positive squares in 4 ways, for example, as 1016064 + 6245001 = 1008^2 + 2499^2 .

It is not a de Polignac number, because 7261065 - 21 = 7261063 is a prime.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7261061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 81541 + ... + 81629.

It is an arithmetic number, because the mean of its divisors is an integer number (211185).

Almost surely, 27261065 is an apocalyptic number.

It is an amenable number.

7261065 is an abundant number, since it is smaller than the sum of its proper divisors (7944255).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7261065 is a wasteful number, since it uses less digits than its factorization.

7261065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 7261065 is about 2694.6363391003. The cubic root of 7261065 is about 193.6422446261.

The spelling of 7261065 in words is "seven million, two hundred sixty-one thousand, sixty-five".

Divisors: 1 3 5 7 9 15 21 35 37 45 49 63 89 105 111 147 185 245 259 267 315 333 441 445 555 623 735 777 801 1295 1335 1665 1813 1869 2205 2331 3115 3293 3885 4005 4361 5439 5607 9065 9345 9879 11655 13083 16317 16465 21805 23051 27195 28035 29637 39249 49395 65415 69153 81585 115255 148185 161357 196245 207459 345765 484071 806785 1037295 1452213 2420355 7261065