80518868 has 18 divisors (see below), whose sum is σ = 149686446. Its totient is φ = 37890688.

The previous prime is 80518859. The next prime is 80518897. The reversal of 80518868 is 86881508.

It can be written as a sum of positive squares in 3 ways, for example, as 56821444 + 23697424 = 7538^2 + 4868^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33671 + ... + 35982.

Almost surely, 2^80518868 is an apocalyptic number.

It is an amenable number.

80518868 is a deficient number, since it is larger than the sum of its proper divisors (69167578).

80518868 is a wasteful number, since it uses less digits than its factorization.

80518868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69691 (or 69672 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 44.

The square root of 80518868 is about 8973.2306333895. The cubic root of 80518868 is about 431.8164872701.

The spelling of 80518868 in words is "eighty million, five hundred eighteen thousand, eight hundred sixty-eight".