667648584293 has 2 divisors, whose sum is σ = 667648584294. Its totient is φ = 667648584292.

The previous prime is 667648584259. The next prime is 667648584307. The reversal of 667648584293 is 392485846766.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 617987798884 + 49660785409 = 786122^2 + 222847^2 .

It is a cyclic number.

It is not a de Polignac number, because 667648584293 - 2²⁸ = 667380148837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667648584203) by changing a digit.

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 as a sum of consecutive naturals, namely, 333824292146 + 333824292147.

It is an arithmetic number, because the mean of its divisors is an integer number (333824292147).

Almost surely, 2^667648584293 is an apocalyptic number.

It is an amenable number.

667648584293 is a deficient number, since it is larger than the sum of its proper divisors (1).

667648584293 is an equidigital number, since it uses as much as digits as its factorization.

667648584293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 418037760, while the sum is 68.

The spelling of 667648584293 in words is "six hundred sixty-seven billion, six hundred forty-eight million, five hundred eighty-four thousand, two hundred ninety-three".