664888650307 has 4 divisors (see below), whose sum is σ = 759872743216. Its totient is φ = 569904557400.

The previous prime is 664888650289. The next prime is 664888650317. The reversal of 664888650307 is 703056888466.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 703056888466 = 2 ⋅351528444233.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-664888650307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664888650317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47492046444 + ... + 47492046457.

It is an arithmetic number, because the mean of its divisors is an integer number (189968185804).

Almost surely, 2^664888650307 is an apocalyptic number.

664888650307 is a deficient number, since it is larger than the sum of its proper divisors (94984092909).

664888650307 is an equidigital number, since it uses as much as digits as its factorization.

664888650307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94984092908.

The product of its (nonzero) digits is 46448640, while the sum is 61.

The spelling of 664888650307 in words is "six hundred sixty-four billion, eight hundred eighty-eight million, six hundred fifty thousand, three hundred seven".