8642853657 has 12 divisors (see below), whose sum is σ = 12946497200. Its totient is φ = 5761902276.

The previous prime is 8642853649. The next prime is 8642853689. The reversal of 8642853657 is 7563582468.

8642853657 is a `hidden beast` number, since 86 + 4 + 28 + 536 + 5 + 7 = 666.

It is not a de Polignac number, because 8642853657 - 2³ = 8642853649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8642853697) 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, 17783407 + ... + 17783892.

Almost surely, 2^8642853657 is an apocalyptic number.

It is an amenable number.

8642853657 is a deficient number, since it is larger than the sum of its proper divisors (4303643543).

8642853657 is an equidigital number, since it uses as much as digits as its factorization.

8642853657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35567314 (or 35567302 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 54.

The square root of 8642853657 is about 92966.9492723086. The cubic root of 8642853657 is about 2052.1970224797.

The spelling of 8642853657 in words is "eight billion, six hundred forty-two million, eight hundred fifty-three thousand, six hundred fifty-seven".