99768957 has 4 divisors (see below), whose sum is σ = 133025280. Its totient is φ = 66512636.

The previous prime is 99768953. The next prime is 99768959. The reversal of 99768957 is 75986799.

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 99768957 - 2² = 99768953 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99768957.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99768953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16628157 + ... + 16628162.

It is an arithmetic number, because the mean of its divisors is an integer number (33256320).

Almost surely, 2^99768957 is an apocalyptic number.

It is an amenable number.

99768957 is a deficient number, since it is larger than the sum of its proper divisors (33256323).

99768957 is a wasteful number, since it uses less digits than its factorization.

99768957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33256322.

The product of its digits is 8573040, while the sum is 60.

The square root of 99768957 is about 9988.4411696721. The cubic root of 99768957 is about 463.8011388355.

The spelling of 99768957 in words is "ninety-nine million, seven hundred sixty-eight thousand, nine hundred fifty-seven".