8620979975 has 12 divisors (see below), whose sum is σ = 10740685320. Its totient is φ = 6864093600.

The previous prime is 8620979951. The next prime is 8620979977. The reversal of 8620979975 is 5799790268.

It is not a de Polignac number, because 8620979975 - 2²⁰ = 8619931399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8620979977) 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, 811880 + ... + 822429.

It is an arithmetic number, because the mean of its divisors is an integer number (895057110).

Almost surely, 2^8620979975 is an apocalyptic number.

8620979975 is a deficient number, since it is larger than the sum of its proper divisors (2119705345).

8620979975 is a wasteful number, since it uses less digits than its factorization.

8620979975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1634530 (or 1634525 counting only the distinct ones).

The product of its (nonzero) digits is 17146080, while the sum is 62.

The square root of 8620979975 is about 92849.2324954816. The cubic root of 8620979975 is about 2050.4642989588.

The spelling of 8620979975 in words is "eight billion, six hundred twenty million, nine hundred seventy-nine thousand, nine hundred seventy-five".