85208656 has 20 divisors (see below), whose sum is σ = 177791572. Its totient is φ = 39326976.

The previous prime is 85208647. The next prime is 85208663. The reversal of 85208656 is 65680258.

It can be written as a sum of positive squares in 2 ways, for example, as 3920400 + 81288256 = 1980^2 + 9016^2 .

It is a congruent number.

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, 204621 + ... + 205036.

Almost surely, 2^85208656 is an apocalyptic number.

It is an amenable number.

85208656 is an abundant number, since it is smaller than the sum of its proper divisors (92582916).

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

85208656 is a wasteful number, since it uses less digits than its factorization.

85208656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409678 (or 409672 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 85208656 is about 9230.8534816668. The cubic root of 85208656 is about 440.0424476955.

The spelling of 85208656 in words is "eighty-five million, two hundred eight thousand, six hundred fifty-six".