85690816 has 28 divisors (see below), whose sum is σ = 174643288. Its totient is φ = 41686272.

The previous prime is 85690807. The next prime is 85690849. The reversal of 85690816 is 61809658.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 15726 + ... + 20461.

Almost surely, 2^85690816 is an apocalyptic number.

It is an amenable number.

85690816 is an abundant number, since it is smaller than the sum of its proper divisors (88952472).

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

85690816 is a wasteful number, since it uses less digits than its factorization.

85690816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36236 (or 36226 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 85690816 is about 9256.9334015105. The cubic root of 85690816 is about 440.8708921853.

The spelling of 85690816 in words is "eighty-five million, six hundred ninety thousand, eight hundred sixteen".