664415743674635 has 8 divisors (see below), whose sum is σ = 801753076167120. Its totient is φ = 528563139101344.

The previous prime is 664415743674499. The next prime is 664415743674677. The reversal of 664415743674635 is 536476347514466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 664415743674635 - 2⁴⁴ = 646823557630219 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 371181978812 + ... + 371181980601.

It is an arithmetic number, because the mean of its divisors is an integer number (100219134520890).

Almost surely, 2^{664415743674635} is an apocalyptic number.

664415743674635 is a deficient number, since it is larger than the sum of its proper divisors (137337332492485).

664415743674635 is a wasteful number, since it uses less digits than its factorization.

664415743674635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742363959597.

The product of its digits is 3657830400, while the sum is 71.

The spelling of 664415743674635 in words is "six hundred sixty-four trillion, four hundred fifteen billion, seven hundred forty-three million, six hundred seventy-four thousand, six hundred thirty-five".