90986556 has 24 divisors (see below), whose sum is σ = 212486400. Its totient is φ = 30302512.

The previous prime is 90986491. The next prime is 90986561. The reversal of 90986556 is 65568909.

It is a super-2 number, since 2×90986556² = 16557106745482272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15295 + ... + 20393.

It is an arithmetic number, because the mean of its divisors is an integer number (8853600).

Almost surely, 2^90986556 is an apocalyptic number.

90986556 is the 5099-th nonagonal number.

It is an amenable number.

90986556 is an abundant number, since it is smaller than the sum of its proper divisors (121499844).

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

90986556 is a wasteful number, since it uses less digits than its factorization.

90986556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6593 (or 6591 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 48.

The square root of 90986556 is about 9538.6873310744. The cubic root of 90986556 is about 449.7719931345.

The spelling of 90986556 in words is "ninety million, nine hundred eighty-six thousand, five hundred fifty-six".