79977652 has 6 divisors (see below), whose sum is σ = 139960898. Its totient is φ = 39988824.

The previous prime is 79977641. The next prime is 79977697. The reversal of 79977652 is 25677997.

It can be written as a sum of positive squares in only one way, i.e., 46730896 + 33246756 = 6836^2 + 5766^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 79977652.

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, 9997203 + ... + 9997210.

Almost surely, 2^79977652 is an apocalyptic number.

It is an amenable number.

79977652 is a deficient number, since it is larger than the sum of its proper divisors (59983246).

79977652 is a wasteful number, since it uses less digits than its factorization.

79977652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19994417 (or 19994415 counting only the distinct ones).

The product of its digits is 1666980, while the sum is 52.

The square root of 79977652 is about 8943.0225315606. The cubic root of 79977652 is about 430.8468115143.

The spelling of 79977652 in words is "seventy-nine million, nine hundred seventy-seven thousand, six hundred fifty-two".