64673216 has 14 divisors (see below), whose sum is σ = 128336040. Its totient is φ = 32336576.

The previous prime is 64673137. The next prime is 64673221. The reversal of 64673216 is 61237646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505196 + ... + 505323.

It is an arithmetic number, because the mean of its divisors is an integer number (9166860).

Almost surely, 2^64673216 is an apocalyptic number.

It is an amenable number.

64673216 is a deficient number, since it is larger than the sum of its proper divisors (63662824).

64673216 is a wasteful number, since it uses less digits than its factorization.

64673216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010531 (or 1010521 counting only the distinct ones).

The product of its digits is 36288, while the sum is 35.

The square root of 64673216 is about 8041.9659288012. The cubic root of 64673216 is about 401.3976441227.

The spelling of 64673216 in words is "sixty-four million, six hundred seventy-three thousand, two hundred sixteen".