85401656 has 32 divisors (see below), whose sum is σ = 171752400. Its totient is φ = 39686400.

The previous prime is 85401649. The next prime is 85401677. The reversal of 85401656 is 65610458.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2756 + ... + 13356.

Almost surely, 2^85401656 is an apocalyptic number.

It is an amenable number.

85401656 is an abundant number, since it is smaller than the sum of its proper divisors (86350744).

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

85401656 is a wasteful number, since it uses less digits than its factorization.

85401656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10679 (or 10675 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 85401656 is about 9241.3016399206. The cubic root of 85401656 is about 440.3744333386.

The spelling of 85401656 in words is "eighty-five million, four hundred one thousand, six hundred fifty-six".