99668797 has 4 divisors (see below), whose sum is σ = 101986720. Its totient is φ = 97350876.

The previous prime is 99668791. The next prime is 99668809. The reversal of 99668797 is 79786699.

99668797 is nontrivially palindromic in base 8.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 99668797 - 2⁷ = 99668669 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 (99668791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1158897 + ... + 1158982.

It is an arithmetic number, because the mean of its divisors is an integer number (25496680).

Almost surely, 2^99668797 is an apocalyptic number.

It is an amenable number.

99668797 is a deficient number, since it is larger than the sum of its proper divisors (2317923).

99668797 is a wasteful number, since it uses less digits than its factorization.

99668797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2317922.

The product of its digits is 10287648, while the sum is 61.

The square root of 99668797 is about 9983.4261153173. The cubic root of 99668797 is about 463.6458805347.

The spelling of 99668797 in words is "ninety-nine million, six hundred sixty-eight thousand, seven hundred ninety-seven".