636734003697 has 24 divisors (see below), whose sum is σ = 1007758458720. Its totient is φ = 384199385280.

The previous prime is 636734003669. The next prime is 636734003707. The reversal of 636734003697 is 796300437636.

636734003697 is a `hidden beast` number, since 63 + 67 + 3 + 400 + 36 + 97 = 666.

It is not a de Polignac number, because 636734003697 - 2⁷ = 636734003569 is a prime.

It is a super-2 number, since 2×636734003697² (a number of 24 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (636734003897) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14144172 + ... + 14189117.

It is an arithmetic number, because the mean of its divisors is an integer number (41989935780).

Almost surely, 2^636734003697 is an apocalyptic number.

It is an amenable number.

636734003697 is a deficient number, since it is larger than the sum of its proper divisors (371024455023).

636734003697 is a wasteful number, since it uses less digits than its factorization.

636734003697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28333533 (or 28333530 counting only the distinct ones).

The product of its (nonzero) digits is 10287648, while the sum is 54.

The spelling of 636734003697 in words is "six hundred thirty-six billion, seven hundred thirty-four million, three thousand, six hundred ninety-seven".