64674972 has 18 divisors (see below), whose sum is σ = 163484048. Its totient is φ = 21558312.

The previous prime is 64674971. The next prime is 64674979. The reversal of 64674972 is 27947646.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64674971) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 898228 + ... + 898299.

Almost surely, 2^64674972 is an apocalyptic number.

It is an amenable number.

64674972 is an abundant number, since it is smaller than the sum of its proper divisors (98809076).

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

64674972 is a wasteful number, since it uses less digits than its factorization.

64674972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1796537 (or 1796532 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 64674972 is about 8042.0751053444. The cubic root of 64674972 is about 401.4012769913.

The spelling of 64674972 in words is "sixty-four million, six hundred seventy-four thousand, nine hundred seventy-two".