90898923064 has 32 divisors (see below), whose sum is σ = 175209557040. Its totient is φ = 44184211200.

The previous prime is 90898922971. The next prime is 90898923097. The reversal of 90898923064 is 46032989809.

It is a super-2 number, since 2×90898923064² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its 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 (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 396807 + ... + 582454.

Almost surely, 2^90898923064 is an apocalyptic number.

It is an amenable number.

90898923064 is a deficient number, since it is larger than the sum of its proper divisors (84310633976).

90898923064 is a wasteful number, since it uses less digits than its factorization.

90898923064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979591 (or 979587 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 58.

The spelling of 90898923064 in words is "ninety billion, eight hundred ninety-eight million, nine hundred twenty-three thousand, sixty-four".