634668975390324 has 96 divisors (see below), whose sum is σ = 1694398651052800. Its totient is φ = 181125390090240.

The previous prime is 634668975390323. The next prime is 634668975390407. The reversal of 634668975390324 is 423093579866436.

It is a super-2 number, since 2×634668975390324² (a number of 30 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (75) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634668975390323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 260069244 + ... + 262498284.

Almost surely, 2^{634668975390324} is an apocalyptic number.

It is an amenable number.

634668975390324 is an abundant number, since it is smaller than the sum of its proper divisors (1059729675662476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

634668975390324 is a wasteful number, since it uses less digits than its factorization.

634668975390324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2432633 (or 2432631 counting only the distinct ones).

The product of its (nonzero) digits is 4232632320, while the sum is 75.

The spelling of 634668975390324 in words is "six hundred thirty-four trillion, six hundred sixty-eight billion, nine hundred seventy-five million, three hundred ninety thousand, three hundred twenty-four".