664802228715 has 64 divisors (see below), whose sum is σ = 1153059840000. Its totient is φ = 326026366848.

The previous prime is 664802228627. The next prime is 664802228747. The reversal of 664802228715 is 517822208466.

It is not a de Polignac number, because 664802228715 - 2¹⁷ = 664802097643 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1078156 + ... + 1578614.

It is an arithmetic number, because the mean of its divisors is an integer number (18016560000).

Almost surely, 2^664802228715 is an apocalyptic number.

664802228715 is a deficient number, since it is larger than the sum of its proper divisors (488257611285).

664802228715 is a wasteful number, since it uses less digits than its factorization.

664802228715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500624.

The product of its (nonzero) digits is 2580480, while the sum is 51.

The spelling of 664802228715 in words is "six hundred sixty-four billion, eight hundred two million, two hundred twenty-eight thousand, seven hundred fifteen".