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64061 = 29472
BaseRepresentation
bin1111101000111101
310020212122
433220331
54022221
61212325
7354524
oct175075
9106778
1064061
1144148
12310a5
132320a
14194bb
1513eab
hexfa3d

64061 has 6 divisors (see below), whose sum is σ = 67710. Its totient is φ = 60536.

The previous prime is 64037. The next prime is 64063. The reversal of 64061 is 16046.

It can be written as a sum of positive squares in only one way, i.e., 55225 + 8836 = 235^2 + 94^2 .

It is not a de Polignac number, because 64061 - 26 = 63997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 64061.

It is not an unprimeable number, because it can be changed into a prime (64063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1340 + ... + 1386.

It is an arithmetic number, because the mean of its divisors is an integer number (11285).

264061 is an apocalyptic number.

It is an amenable number.

64061 is a deficient number, since it is larger than the sum of its proper divisors (3649).

64061 is an equidigital number, since it uses as much as digits as its factorization.

64061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123 (or 76 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 64061 is about 253.1027459353. The cubic root of 64061 is about 40.0127042979.

The spelling of 64061 in words is "sixty-four thousand, sixty-one".

Divisors: 1 29 47 1363 2209 64061