90866564 has 12 divisors (see below), whose sum is σ = 168370524. Its totient is φ = 42760704.

The previous prime is 90866533. The next prime is 90866579. The reversal of 90866564 is 46566809.

It can be written as a sum of positive squares in 2 ways, for example, as 56550400 + 34316164 = 7520^2 + 5858^2 .

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, 668069 + ... + 668204.

It is an arithmetic number, because the mean of its divisors is an integer number (14030877).

Almost surely, 2^90866564 is an apocalyptic number.

It is an amenable number.

90866564 is a deficient number, since it is larger than the sum of its proper divisors (77503960).

90866564 is a wasteful number, since it uses less digits than its factorization.

90866564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336294 (or 1336292 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 90866564 is about 9532.3955016564. The cubic root of 90866564 is about 449.5741881497.

The spelling of 90866564 in words is "ninety million, eight hundred sixty-six thousand, five hundred sixty-four".