79966997 has 16 divisors (see below), whose sum is σ = 92923200. Its totient is φ = 68010240.

The previous prime is 79966993. The next prime is 79967009.

79966997 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 79966997 - 2² = 79966993 is a prime.

It is a Duffinian number.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32279 + ... + 34667.

It is an arithmetic number, because the mean of its divisors is an integer number (5807700).

Almost surely, 2^79966997 is an apocalyptic number.

It is an amenable number.

79966997 is a deficient number, since it is larger than the sum of its proper divisors (12956203).

79966997 is a wasteful number, since it uses less digits than its factorization.

79966997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2596.

The product of its digits is 11573604, while the sum is 62.

The square root of 79966997 is about 8942.4267958983. The cubic root of 79966997 is about 430.8276775165.

The spelling of 79966997 in words is "seventy-nine million, nine hundred sixty-six thousand, nine hundred ninety-seven".