79966996 has 6 divisors (see below), whose sum is σ = 139942250. Its totient is φ = 39983496.

The previous prime is 79966993. The next prime is 79967009. The reversal of 79966996 is 69966997.

It can be written as a sum of positive squares in only one way, i.e., 57214096 + 22752900 = 7564^2 + 4770^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79966993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9995871 + ... + 9995878.

Almost surely, 2^79966996 is an apocalyptic number.

It is an amenable number.

79966996 is a deficient number, since it is larger than the sum of its proper divisors (59975254).

79966996 is a wasteful number, since it uses less digits than its factorization.

79966996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19991753 (or 19991751 counting only the distinct ones).

The product of its digits is 9920232, while the sum is 61.

The square root of 79966996 is about 8942.4267399851. The cubic root of 79966996 is about 430.8276757207.

Subtracting from 79966996 its reverse (69966997), we obtain a palindrome (9999999).

The spelling of 79966996 in words is "seventy-nine million, nine hundred sixty-six thousand, nine hundred ninety-six".