64331672 has 16 divisors (see below), whose sum is σ = 127717560. Its totient is φ = 30273664.

The previous prime is 64331671. The next prime is 64331677. The reversal of 64331672 is 27613346.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64331671) 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, 236378 + ... + 236649.

Almost surely, 2^64331672 is an apocalyptic number.

It is an amenable number.

64331672 is a deficient number, since it is larger than the sum of its proper divisors (63385888).

64331672 is a wasteful number, since it uses less digits than its factorization.

64331672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473050 (or 473046 counting only the distinct ones).

The product of its digits is 18144, while the sum is 32.

The square root of 64331672 is about 8020.7027123563. The cubic root of 64331672 is about 400.6897931132.

The spelling of 64331672 in words is "sixty-four million, three hundred thirty-one thousand, six hundred seventy-two".