667648584307 has 2 divisors, whose sum is σ = 667648584308. Its totient is φ = 667648584306.

The previous prime is 667648584293. The next prime is 667648584331. The reversal of 667648584307 is 703485846766.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 667648584307 - 2²³ = 667640195699 is a prime.

It is not a weakly prime, because it can be changed into another prime (667648584377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333824292153 + 333824292154.

It is an arithmetic number, because the mean of its divisors is an integer number (333824292154).

Almost surely, 2^667648584307 is an apocalyptic number.

667648584307 is a deficient number, since it is larger than the sum of its proper divisors (1).

667648584307 is an equidigital number, since it uses as much as digits as its factorization.

667648584307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162570240, while the sum is 64.

The spelling of 667648584307 in words is "six hundred sixty-seven billion, six hundred forty-eight million, five hundred eighty-four thousand, three hundred seven".