636396697 has 8 divisors (see below), whose sum is σ = 672315200. Its totient is φ = 600720624.

The previous prime is 636396679. The next prime is 636396701. The reversal of 636396697 is 796693636.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 636396697 - 2²³ = 628008089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (636396197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55197 + ... + 65722.

It is an arithmetic number, because the mean of its divisors is an integer number (84039400).

Almost surely, 2^636396697 is an apocalyptic number.

It is an amenable number.

636396697 is a deficient number, since it is larger than the sum of its proper divisors (35918503).

636396697 is a wasteful number, since it uses less digits than its factorization.

636396697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121215.

The product of its digits is 6613488, while the sum is 55.

The square root of 636396697 is about 25226.9042294135. The cubic root of 636396697 is about 860.1535227095.

The spelling of 636396697 in words is "six hundred thirty-six million, three hundred ninety-six thousand, six hundred ninety-seven".