80876564 has 6 divisors (see below), whose sum is σ = 141533994. Its totient is φ = 40438280.

The previous prime is 80876557. The next prime is 80876567. The reversal of 80876564 is 46567808.

It can be written as a sum of positive squares in only one way, i.e., 72420100 + 8456464 = 8510^2 + 2908^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80876567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10109567 + ... + 10109574.

It is an arithmetic number, because the mean of its divisors is an integer number (23588999).

Almost surely, 2^80876564 is an apocalyptic number.

It is an amenable number.

80876564 is a deficient number, since it is larger than the sum of its proper divisors (60657430).

80876564 is a wasteful number, since it uses less digits than its factorization.

80876564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20219145 (or 20219143 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 44.

The square root of 80876564 is about 8993.1398298926. The cubic root of 80876564 is about 432.4549747642.

The spelling of 80876564 in words is "eighty million, eight hundred seventy-six thousand, five hundred sixty-four".