90564736 has 32 divisors (see below), whose sum is σ = 184833180. Its totient is φ = 44175360.

The previous prime is 90564713. The next prime is 90564769. The reversal of 90564736 is 63746509.

It can be written as a sum of positive squares in 2 ways, for example, as 63107136 + 27457600 = 7944^2 + 5240^2 .

It is a tau number, because it is divible by the number of its divisors (32).

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, 3381 + ... + 13876.

Almost surely, 2^90564736 is an apocalyptic number.

It is an amenable number.

90564736 is an abundant number, since it is smaller than the sum of its proper divisors (94268444).

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

90564736 is a wasteful number, since it uses less digits than its factorization.

90564736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17312 (or 17300 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 40.

The square root of 90564736 is about 9516.5506356032. The cubic root of 90564736 is about 449.0758581692.

The spelling of 90564736 in words is "ninety million, five hundred sixty-four thousand, seven hundred thirty-six".