90724964 has 24 divisors (see below), whose sum is σ = 177430176. Its totient is φ = 40232000.

The previous prime is 90724957. The next prime is 90724987. The reversal of 90724964 is 46942709.

It is a Harshad number since it is a multiple of its sum of digits (41).

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, 23342 + ... + 26949.

It is an arithmetic number, because the mean of its divisors is an integer number (7392924).

Almost surely, 2^90724964 is an apocalyptic number.

It is an amenable number.

90724964 is a deficient number, since it is larger than the sum of its proper divisors (86705212).

90724964 is a wasteful number, since it uses less digits than its factorization.

90724964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50347 (or 50345 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 90724964 is about 9524.9653017741. The cubic root of 90724964 is about 449.3405385780.

The spelling of 90724964 in words is "ninety million, seven hundred twenty-four thousand, nine hundred sixty-four".