697138558061317 has 2 divisors, whose sum is σ = 697138558061318. Its totient is φ = 697138558061316.

The previous prime is 697138558061299. The next prime is 697138558061333. The reversal of 697138558061317 is 713160855831796.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 697017341979396 + 121216081921 = 26401086^2 + 348161^2 .

It is a cyclic number.

It is not a de Polignac number, because 697138558061317 - 2²³ = 697138549672709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (697138558067317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348569279030658 + 348569279030659.

It is an arithmetic number, because the mean of its divisors is an integer number (348569279030659).

Almost surely, 2^{697138558061317} is an apocalyptic number.

It is an amenable number.

697138558061317 is a deficient number, since it is larger than the sum of its proper divisors (1).

697138558061317 is an equidigital number, since it uses as much as digits as its factorization.

697138558061317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 228614400, while the sum is 70.

The spelling of 697138558061317 in words is "six hundred ninety-seven trillion, one hundred thirty-eight billion, five hundred fifty-eight million, sixty-one thousand, three hundred seventeen".