Search a number
-
+
806560481 = 2321524689
BaseRepresentation
bin110000000100110…
…010001011100001
32002012200111222102
4300010302023201
53122434413411
6212011220145
725662436166
oct6004621341
92065614872
10806560481
11384311911
121a6147655
13cb13c02c
147919606d
154ac20d3b
hex301322e1

806560481 has 6 divisors (see below), whose sum is σ = 843153570. Its totient is φ = 771492128.

The previous prime is 806560477. The next prime is 806560523. The reversal of 806560481 is 184065608.

It can be written as a sum of positive squares in only one way, i.e., 649434256 + 157126225 = 25484^2 + 12535^2 .

It is not a de Polignac number, because 806560481 - 22 = 806560477 is a prime.

It is a super-2 number, since 2×8065604812 = 1301079619021902722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (806560681) 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, 761816 + ... + 762873.

It is an arithmetic number, because the mean of its divisors is an integer number (140525595).

Almost surely, 2806560481 is an apocalyptic number.

It is an amenable number.

806560481 is a deficient number, since it is larger than the sum of its proper divisors (36593089).

806560481 is a wasteful number, since it uses less digits than its factorization.

806560481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1524735 (or 1524712 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 806560481 is about 28400.0084683086. The cubic root of 806560481 is about 930.8484495169.

The spelling of 806560481 in words is "eight hundred six million, five hundred sixty thousand, four hundred eighty-one".

Divisors: 1 23 529 1524689 35067847 806560481