80813688 has 32 divisors (see below), whose sum is σ = 212668800. Its totient is φ = 25519968.

The previous prime is 80813687. The next prime is 80813713. The reversal of 80813688 is 88631808.

It is a happy number.

It is a super-2 number, since 2×80813688² = 13061704336322688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80813687) by changing a digit.

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, 88156 + ... + 89067.

It is an arithmetic number, because the mean of its divisors is an integer number (6645900).

Almost surely, 2^80813688 is an apocalyptic number.

It is an amenable number.

80813688 is an abundant number, since it is smaller than the sum of its proper divisors (131855112).

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

80813688 is a wasteful number, since it uses less digits than its factorization.

80813688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177251 (or 177247 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 42.

The square root of 80813688 is about 8989.6433744615. The cubic root of 80813688 is about 432.3428776494.

The spelling of 80813688 in words is "eighty million, eight hundred thirteen thousand, six hundred eighty-eight".