697982289761 has 2 divisors, whose sum is σ = 697982289762. Its totient is φ = 697982289760.

The previous prime is 697982289673. The next prime is 697982289811. The reversal of 697982289761 is 167982289796.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 687141523600 + 10840766161 = 828940^2 + 104119^2 .

It is a cyclic number.

It is not a de Polignac number, because 697982289761 - 2¹⁰ = 697982288737 is a prime.

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 (697982249761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348991144880 + 348991144881.

It is an arithmetic number, because the mean of its divisors is an integer number (348991144881).

Almost surely, 2^697982289761 is an apocalyptic number.

It is an amenable number.

697982289761 is a deficient number, since it is larger than the sum of its proper divisors (1).

697982289761 is an equidigital number, since it uses as much as digits as its factorization.

697982289761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 329204736, while the sum is 74.

The spelling of 697982289761 in words is "six hundred ninety-seven billion, nine hundred eighty-two million, two hundred eighty-nine thousand, seven hundred sixty-one".