634868436 has 48 divisors (see below), whose sum is σ = 1527341760. Its totient is φ = 205121280.

The previous prime is 634868393. The next prime is 634868441.

634868436 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73135 + ... + 81353.

It is an arithmetic number, because the mean of its divisors is an integer number (31819620).

Almost surely, 2^634868436 is an apocalyptic number.

It is an amenable number.

634868436 is an abundant number, since it is smaller than the sum of its proper divisors (892473324).

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

634868436 is a wasteful number, since it uses less digits than its factorization.

634868436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8424 (or 8422 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 48.

The square root of 634868436 is about 25196.5957224384. The cubic root of 634868436 is about 859.4644384993.

The spelling of 634868436 in words is "six hundred thirty-four million, eight hundred sixty-eight thousand, four hundred thirty-six".