809675560 has 32 divisors (see below), whose sum is σ = 1822673160. Its totient is φ = 323709696.

The previous prime is 809675543. The next prime is 809675561. The reversal of 809675560 is 65576908.

It can be written as a sum of positive squares in 4 ways, for example, as 757460484 + 52215076 = 27522^2 + 7226^2 .

It is a super-2 number, since 2×809675560² = 1311149024922627200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 809675560.

It is not an unprimeable number, because it can be changed into a prime (809675561) 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 7 ways as a sum of consecutive naturals, for example, 108262 + ... + 115498.

Almost surely, 2^809675560 is an apocalyptic number.

It is an amenable number.

809675560 is an abundant number, since it is smaller than the sum of its proper divisors (1012997600).

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

809675560 is a wasteful number, since it uses less digits than its factorization.

809675560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10045 (or 10041 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 46.

The square root of 809675560 is about 28454.7985408437. The cubic root of 809675560 is about 932.0452770773.

The spelling of 809675560 in words is "eight hundred nine million, six hundred seventy-five thousand, five hundred sixty".