664863027315 has 16 divisors (see below), whose sum is σ = 1063923296928. Its totient is φ = 354546130176.

The previous prime is 664863027307. The next prime is 664863027317. The reversal of 664863027315 is 513720368466.

It is not a de Polignac number, because 664863027315 - 2³ = 664863027307 is a prime.

It is a super-2 number, since 2×664863027315² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (664863027317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2851882 + ... + 3076191.

It is an arithmetic number, because the mean of its divisors is an integer number (66495206058).

Almost surely, 2^664863027315 is an apocalyptic number.

664863027315 is a deficient number, since it is larger than the sum of its proper divisors (399060269613).

664863027315 is a wasteful number, since it uses less digits than its factorization.

664863027315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5935558.

The product of its (nonzero) digits is 4354560, while the sum is 51.

The spelling of 664863027315 in words is "six hundred sixty-four billion, eight hundred sixty-three million, twenty-seven thousand, three hundred fifteen".