80678636 has 12 divisors (see below), whose sum is σ = 148618680. Its totient is φ = 38216160.

The previous prime is 80678629. The next prime is 80678657. The reversal of 80678636 is 63687608.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 530705 + ... + 530856.

It is an arithmetic number, because the mean of its divisors is an integer number (12384890).

Almost surely, 2^80678636 is an apocalyptic number.

It is an amenable number.

80678636 is a deficient number, since it is larger than the sum of its proper divisors (67940044).

80678636 is a wasteful number, since it uses less digits than its factorization.

80678636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061584 (or 1061582 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 80678636 is about 8982.1287009261. The cubic root of 80678636 is about 432.1019064002.

The spelling of 80678636 in words is "eighty million, six hundred seventy-eight thousand, six hundred thirty-six".