90565724 has 24 divisors (see below), whose sum is σ = 166656000. Its totient is φ = 43001280.

The previous prime is 90565669. The next prime is 90565729. The reversal of 90565724 is 42756509.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90565729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 677 + ... + 13475.

It is an arithmetic number, because the mean of its divisors is an integer number (6944000).

Almost surely, 2^90565724 is an apocalyptic number.

It is an amenable number.

90565724 is a deficient number, since it is larger than the sum of its proper divisors (76090276).

90565724 is a wasteful number, since it uses less digits than its factorization.

90565724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12893 (or 12891 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 90565724 is about 9516.6025450262. The cubic root of 90565724 is about 449.0774912012.

The spelling of 90565724 in words is "ninety million, five hundred sixty-five thousand, seven hundred twenty-four".