80621688 has 32 divisors (see below), whose sum is σ = 230348160. Its totient is φ = 23034720.

The previous prime is 80621677. The next prime is 80621713. The reversal of 80621688 is 88612608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239778 + ... + 240113.

It is an arithmetic number, because the mean of its divisors is an integer number (7198380).

Almost surely, 2^80621688 is an apocalyptic number.

It is an amenable number.

80621688 is an abundant number, since it is smaller than the sum of its proper divisors (149726472).

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

80621688 is a wasteful number, since it uses less digits than its factorization.

80621688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479907 (or 479903 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 80621688 is about 8978.9580687294. The cubic root of 80621688 is about 432.0002143346. Note that the first 3 decimals are identical.

The spelling of 80621688 in words is "eighty million, six hundred twenty-one thousand, six hundred eighty-eight".