79866897 has 12 divisors (see below), whose sum is σ = 117050640. Its totient is φ = 48403960.

The previous prime is 79866883. The next prime is 79866949.

79866897 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 79866897 - 2¹¹ = 79864849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79866897.

It is not an unprimeable number, because it can be changed into a prime (79866817) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109647 + ... + 110372.

It is an arithmetic number, because the mean of its divisors is an integer number (9754220).

Almost surely, 2^79866897 is an apocalyptic number.

It is an amenable number.

79866897 is a deficient number, since it is larger than the sum of its proper divisors (37183743).

79866897 is a wasteful number, since it uses less digits than its factorization.

79866897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220044 (or 220033 counting only the distinct ones).

The product of its digits is 9144576, while the sum is 60.

The square root of 79866897 is about 8936.8281285924. The cubic root of 79866897 is about 430.6478372526.

The spelling of 79866897 in words is "seventy-nine million, eight hundred sixty-six thousand, eight hundred ninety-seven".