80712616 has 8 divisors (see below), whose sum is σ = 151336170. Its totient is φ = 40356304.

The previous prime is 80712613. The next prime is 80712629. The reversal of 80712616 is 61621708.

It can be written as a sum of positive squares in only one way, i.e., 78322500 + 2390116 = 8850^2 + 1546^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (80712613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5044531 + ... + 5044546.

Almost surely, 2^80712616 is an apocalyptic number.

It is an amenable number.

80712616 is a deficient number, since it is larger than the sum of its proper divisors (70623554).

80712616 is a wasteful number, since it uses less digits than its factorization.

80712616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10089083 (or 10089079 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 80712616 is about 8984.0200355965. The cubic root of 80712616 is about 432.1625617055.

The spelling of 80712616 in words is "eighty million, seven hundred twelve thousand, six hundred sixteen".