90372645 has 64 divisors (see below), whose sum is σ = 184550400. Its totient is φ = 41497920.

The previous prime is 90372637. The next prime is 90372661. The reversal of 90372645 is 54627309.

90372645 is a `hidden beast` number, since 9 + 0 + 3 + 7 + 2 + 645 = 666.

It is not a de Polignac number, because 90372645 - 2³ = 90372637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26614 + ... + 29816.

It is an arithmetic number, because the mean of its divisors is an integer number (2883600).

Almost surely, 2^90372645 is an apocalyptic number.

90372645 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

90372645 is an abundant number, since it is smaller than the sum of its proper divisors (94177755).

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

90372645 is a wasteful number, since it uses less digits than its factorization.

90372645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3247 (or 3241 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 90372645 is about 9506.4528084875. The cubic root of 90372645 is about 448.7581315142.

The spelling of 90372645 in words is "ninety million, three hundred seventy-two thousand, six hundred forty-five".