85231664 has 20 divisors (see below), whose sum is σ = 188727504. Its totient is φ = 36527808.

The previous prime is 85231639. The next prime is 85231687. The reversal of 85231664 is 46613258.

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, 380387 + ... + 380610.

Almost surely, 2^85231664 is an apocalyptic number.

It is an amenable number.

85231664 is an abundant number, since it is smaller than the sum of its proper divisors (103495840).

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

85231664 is a wasteful number, since it uses less digits than its factorization.

85231664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761012 (or 761006 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

The square root of 85231664 is about 9232.0996528417. The cubic root of 85231664 is about 440.0820508140.

The spelling of 85231664 in words is "eighty-five million, two hundred thirty-one thousand, six hundred sixty-four".