64634772 has 24 divisors (see below), whose sum is σ = 153661536. Its totient is φ = 21138208.

The previous prime is 64634767. The next prime is 64634797. The reversal of 64634772 is 27743646.

It is a self number, because there is not a number n which added to its sum of digits gives 64634772.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50178 + ... + 51449.

It is an arithmetic number, because the mean of its divisors is an integer number (6402564).

Almost surely, 2^64634772 is an apocalyptic number.

It is an amenable number.

64634772 is an abundant number, since it is smaller than the sum of its proper divisors (89026764).

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

64634772 is a wasteful number, since it uses less digits than its factorization.

64634772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101687 (or 101685 counting only the distinct ones).

The product of its digits is 169344, while the sum is 39.

The square root of 64634772 is about 8039.5753619206. The cubic root of 64634772 is about 401.3180934698.

The spelling of 64634772 in words is "sixty-four million, six hundred thirty-four thousand, seven hundred seventy-two".