64604663386 has 16 divisors (see below), whose sum is σ = 97383754440. Its totient is φ = 32143567680.

The previous prime is 64604663359. The next prime is 64604663411. The reversal of 64604663386 is 68336640646.

It can be written as a sum of positive squares in 4 ways, for example, as 55849505625 + 8755157761 = 236325^2 + 93569^2 .

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, 814440 + ... + 890236.

Almost surely, 2^64604663386 is an apocalyptic number.

64604663386 is a deficient number, since it is larger than the sum of its proper divisors (32779091054).

64604663386 is a wasteful number, since it uses less digits than its factorization.

64604663386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77889.

The product of its (nonzero) digits is 8957952, while the sum is 52.

The spelling of 64604663386 in words is "sixty-four billion, six hundred four million, six hundred sixty-three thousand, three hundred eighty-six".