64628464 has 20 divisors (see below), whose sum is σ = 128273040. Its totient is φ = 31525760.

The previous prime is 64628449. The next prime is 64628471. The reversal of 64628464 is 46482646.

It is a congruent number.

It is an unprimeable number.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48604 + ... + 49915.

It is an arithmetic number, because the mean of its divisors is an integer number (6413652).

Almost surely, 2^64628464 is an apocalyptic number.

It is an amenable number.

64628464 is a deficient number, since it is larger than the sum of its proper divisors (63644576).

64628464 is a wasteful number, since it uses less digits than its factorization.

64628464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98568 (or 98562 counting only the distinct ones).

The product of its digits is 221184, while the sum is 40.

The square root of 64628464 is about 8039.1830430710. The cubic root of 64628464 is about 401.3050375619.

The spelling of 64628464 in words is "sixty-four million, six hundred twenty-eight thousand, four hundred sixty-four".