664802949579 has 8 divisors (see below), whose sum is σ = 889935423552. Its totient is φ = 441436221000.

The previous prime is 664802949571. The next prime is 664802949641. The reversal of 664802949579 is 975949208466.

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

It is not a de Polignac number, because 664802949579 - 2³ = 664802949571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (664802949571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 441435469 + ... + 441436974.

It is an arithmetic number, because the mean of its divisors is an integer number (111241927944).

Almost surely, 2^664802949579 is an apocalyptic number.

664802949579 is a deficient number, since it is larger than the sum of its proper divisors (225132473973).

664802949579 is a wasteful number, since it uses less digits than its factorization.

664802949579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882872697.

The product of its (nonzero) digits is 235146240, while the sum is 69.

The spelling of 664802949579 in words is "six hundred sixty-four billion, eight hundred two million, nine hundred forty-nine thousand, five hundred seventy-nine".