80643504 has 40 divisors (see below), whose sum is σ = 211272192. Its totient is φ = 26501440.

The previous prime is 80643503. The next prime is 80643517. The reversal of 80643504 is 40534608.

It is not an unprimeable number, because it can be changed into a prime (80643503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8424 + ... + 15239.

Almost surely, 2^80643504 is an apocalyptic number.

It is an amenable number.

80643504 is an abundant number, since it is smaller than the sum of its proper divisors (130628688).

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

80643504 is a wasteful number, since it uses less digits than its factorization.

80643504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23745 (or 23739 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 80643504 is about 8980.1728268447. The cubic root of 80643504 is about 432.0391768311.

The spelling of 80643504 in words is "eighty million, six hundred forty-three thousand, five hundred four".