80872564 has 6 divisors (see below), whose sum is σ = 141526994. Its totient is φ = 40436280.

The previous prime is 80872559. The next prime is 80872579. The reversal of 80872564 is 46527808.

It can be written as a sum of positive squares in only one way, i.e., 56370064 + 24502500 = 7508^2 + 4950^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10109067 + ... + 10109074.

Almost surely, 2^80872564 is an apocalyptic number.

It is an amenable number.

80872564 is a deficient number, since it is larger than the sum of its proper divisors (60654430).

80872564 is a wasteful number, since it uses less digits than its factorization.

80872564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20218145 (or 20218143 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 80872564 is about 8992.9174354044. The cubic root of 80872564 is about 432.4478451816.

The spelling of 80872564 in words is "eighty million, eight hundred seventy-two thousand, five hundred sixty-four".