64622660 has 24 divisors (see below), whose sum is σ = 136219776. Its totient is φ = 25751520.

The previous prime is 64622659. The next prime is 64622681. The reversal of 64622660 is 6622646.

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, 542 + ... + 11381.

It is an arithmetic number, because the mean of its divisors is an integer number (5675824).

Almost surely, 2^64622660 is an apocalyptic number.

It is an amenable number.

64622660 is an abundant number, since it is smaller than the sum of its proper divisors (71597116).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64622660 is a wasteful number, since it uses less digits than its factorization.

64622660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12203 (or 12201 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 64622660 is about 8038.8220530125. The cubic root of 64622660 is about 401.2930240515.

The spelling of 64622660 in words is "sixty-four million, six hundred twenty-two thousand, six hundred sixty".