64604646460 has 12 divisors (see below), whose sum is σ = 135669757608. Its totient is φ = 25841858576.

The previous prime is 64604646409. The next prime is 64604646517. The reversal of 64604646460 is 6464640646.

It is a self number, because there is not a number n which added to its sum of digits gives 64604646460.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1615116142 + ... + 1615116181.

It is an arithmetic number, because the mean of its divisors is an integer number (11305813134).

Almost surely, 2^64604646460 is an apocalyptic number.

It is an amenable number.

64604646460 is an abundant number, since it is smaller than the sum of its proper divisors (71065111148).

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

64604646460 is a wasteful number, since it uses less digits than its factorization.

64604646460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3230232332 (or 3230232330 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 46.

The spelling of 64604646460 in words is "sixty-four billion, six hundred four million, six hundred forty-six thousand, four hundred sixty".