64445630 has 16 divisors (see below), whose sum is σ = 116307360. Its totient is φ = 25710432.

The previous prime is 64445617. The next prime is 64445651. The reversal of 64445630 is 3654446.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4394 + ... + 12173.

It is an arithmetic number, because the mean of its divisors is an integer number (7269210).

Almost surely, 2^64445630 is an apocalyptic number.

64445630 is a deficient number, since it is larger than the sum of its proper divisors (51861730).

64445630 is a wasteful number, since it uses less digits than its factorization.

64445630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16963.

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 64445630 is about 8027.8035601278. The cubic root of 64445630 is about 400.9262493332.

The spelling of 64445630 in words is "sixty-four million, four hundred forty-five thousand, six hundred thirty".