670713766529 has 2 divisors, whose sum is σ = 670713766530. Its totient is φ = 670713766528.

The previous prime is 670713766501. The next prime is 670713766571. The reversal of 670713766529 is 925667317076.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 602832674929 + 67881091600 = 776423^2 + 260540^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-670713766529 is a prime.

It is a super-2 number, since 2×670713766529² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (670713736529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335356883264 + 335356883265.

It is an arithmetic number, because the mean of its divisors is an integer number (335356883265).

Almost surely, 2^670713766529 is an apocalyptic number.

It is an amenable number.

670713766529 is a deficient number, since it is larger than the sum of its proper divisors (1).

670713766529 is an equidigital number, since it uses as much as digits as its factorization.

670713766529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20003760, while the sum is 59.

The spelling of 670713766529 in words is "six hundred seventy billion, seven hundred thirteen million, seven hundred sixty-six thousand, five hundred twenty-nine".