64634404 has 12 divisors (see below), whose sum is σ = 113680000. Its totient is φ = 32154408.

The previous prime is 64634399. The next prime is 64634407. The reversal of 64634404 is 40443646.

It is not an unprimeable number, because it can be changed into a prime (64634407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39804 + ... + 41395.

Almost surely, 2^64634404 is an apocalyptic number.

It is an amenable number.

64634404 is a deficient number, since it is larger than the sum of its proper divisors (49045596).

64634404 is a wasteful number, since it uses less digits than its factorization.

64634404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81402 (or 81400 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

The square root of 64634404 is about 8039.5524751071. The cubic root of 64634404 is about 401.3173318295.

The spelling of 64634404 in words is "sixty-four million, six hundred thirty-four thousand, four hundred four".