80890688 has 14 divisors (see below), whose sum is σ = 160517586. Its totient is φ = 40445312.

The previous prime is 80890681. The next prime is 80890703. The reversal of 80890688 is 88609808.

It can be written as a sum of positive squares in only one way, i.e., 76597504 + 4293184 = 8752^2 + 2072^2 .

It is a super-2 number, since 2×80890688² = 13086606810226688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80890681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631895 + ... + 632022.

Almost surely, 2^80890688 is an apocalyptic number.

It is an amenable number.

80890688 is a deficient number, since it is larger than the sum of its proper divisors (79626898).

80890688 is a wasteful number, since it uses less digits than its factorization.

80890688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263929 (or 1263919 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 47.

The square root of 80890688 is about 8993.9250608397. The cubic root of 80890688 is about 432.4801474398.

The spelling of 80890688 in words is "eighty million, eight hundred ninety thousand, six hundred eighty-eight".