64673704 has 8 divisors (see below), whose sum is σ = 121263210. Its totient is φ = 32336848.

The previous prime is 64673579. The next prime is 64673711. The reversal of 64673704 is 40737646.

It can be written as a sum of positive squares in only one way, i.e., 60871204 + 3802500 = 7802^2 + 1950^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4042099 + ... + 4042114.

Almost surely, 2^64673704 is an apocalyptic number.

It is an amenable number.

64673704 is a deficient number, since it is larger than the sum of its proper divisors (56589506).

64673704 is a wasteful number, since it uses less digits than its factorization.

64673704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8084219 (or 8084215 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 37.

The square root of 64673704 is about 8041.9962695838. The cubic root of 64673704 is about 401.3986537192.

The spelling of 64673704 in words is "sixty-four million, six hundred seventy-three thousand, seven hundred four".