80890568 has 32 divisors (see below), whose sum is σ = 169313760. Its totient is φ = 35911680.

The previous prime is 80890559. The next prime is 80890577. The reversal of 80890568 is 86509808.

It is an interprime number because it is at equal distance from previous prime (80890559) and next prime (80890577).

It is a Harshad number since it is a multiple of its sum of digits (44).

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 7 ways as a sum of consecutive naturals, for example, 6905 + ... + 14472.

It is an arithmetic number, because the mean of its divisors is an integer number (5291055).

Almost surely, 2^80890568 is an apocalyptic number.

80890568 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

80890568 is an abundant number, since it is smaller than the sum of its proper divisors (88423192).

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

80890568 is a wasteful number, since it uses less digits than its factorization.

80890568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21437 (or 21433 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 44.

The square root of 80890568 is about 8993.9183896675. The cubic root of 80890568 is about 432.4799335807.

The spelling of 80890568 in words is "eighty million, eight hundred ninety thousand, five hundred sixty-eight".