80725684 has 12 divisors (see below), whose sum is σ = 152136964. Its totient is φ = 37257984.

The previous prime is 80725681. The next prime is 80725691. The reversal of 80725684 is 48652708.

It can be written as a sum of positive squares in 2 ways, for example, as 19448100 + 61277584 = 4410^2 + 7828^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80725681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 776157 + ... + 776260.

Almost surely, 2^80725684 is an apocalyptic number.

It is an amenable number.

80725684 is a deficient number, since it is larger than the sum of its proper divisors (71411280).

80725684 is a wasteful number, since it uses less digits than its factorization.

80725684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1552434 (or 1552432 counting only the distinct ones).

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

The square root of 80725684 is about 8984.7472975037. The cubic root of 80725684 is about 432.1858839397.

The spelling of 80725684 in words is "eighty million, seven hundred twenty-five thousand, six hundred eighty-four".