90686312 has 64 divisors (see below), whose sum is σ = 182476800. Its totient is φ = 42194880.

The previous prime is 90686311. The next prime is 90686327. The reversal of 90686312 is 21368609.

It is a super-2 number, since 2×90686312² = 16448014368322688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90686311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1147889 + ... + 1147967.

It is an arithmetic number, because the mean of its divisors is an integer number (2851200).

Almost surely, 2^90686312 is an apocalyptic number.

It is an amenable number.

90686312 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

90686312 is a wasteful number, since it uses less digits than its factorization.

90686312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246 (or 242 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 90686312 is about 9522.9361018543. The cubic root of 90686312 is about 449.2767179317.

The spelling of 90686312 in words is "ninety million, six hundred eighty-six thousand, three hundred twelve".