85808456 has 16 divisors (see below), whose sum is σ = 163529340. Its totient is φ = 42200640.

The previous prime is 85808447. The next prime is 85808461. The reversal of 85808456 is 65480858.

It can be written as a sum of positive squares in 2 ways, for example, as 51351556 + 34456900 = 7166^2 + 5870^2 .

It is a super-2 number, since 2×85808456² = 14726182242207872, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87431 + ... + 88406.

Almost surely, 2^85808456 is an apocalyptic number.

It is an amenable number.

85808456 is a deficient number, since it is larger than the sum of its proper divisors (77720884).

85808456 is a wasteful number, since it uses less digits than its factorization.

85808456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175904 (or 175900 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 44.

The square root of 85808456 is about 9263.2853783094. The cubic root of 85808456 is about 441.0725487087.

The spelling of 85808456 in words is "eighty-five million, eight hundred eight thousand, four hundred fifty-six".