64660930 has 16 divisors (see below), whose sum is σ = 116652600. Its totient is φ = 25805952.

The previous prime is 64660927. The next prime is 64660957. The reversal of 64660930 is 3906646.

It can be written as a sum of positive squares in 4 ways, for example, as 64657681 + 3249 = 8041^2 + 57^2 .

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, 2505 + ... + 11644.

Almost surely, 2^64660930 is an apocalyptic number.

64660930 is a deficient number, since it is larger than the sum of its proper divisors (51991670).

64660930 is a wasteful number, since it uses less digits than its factorization.

64660930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14613.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 64660930 is about 8041.2020245732. The cubic root of 64660930 is about 401.3722246159.

The spelling of 64660930 in words is "sixty-four million, six hundred sixty thousand, nine hundred thirty".