697482557 has 2 divisors, whose sum is σ = 697482558. Its totient is φ = 697482556.

The previous prime is 697482517. The next prime is 697482581. The reversal of 697482557 is 755284796.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 417221476 + 280261081 = 20426^2 + 16741^2 .

It is a cyclic number.

It is not a de Polignac number, because 697482557 - 2¹² = 697478461 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 697482499 and 697482508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (697482517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348741278 + 348741279.

It is an arithmetic number, because the mean of its divisors is an integer number (348741279).

Almost surely, 2^697482557 is an apocalyptic number.

It is an amenable number.

697482557 is a deficient number, since it is larger than the sum of its proper divisors (1).

697482557 is an equidigital number, since it uses as much as digits as its factorization.

697482557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4233600, while the sum is 53.

The square root of 697482557 is about 26409.8950584814. The cubic root of 697482557 is about 886.8383195254.

The spelling of 697482557 in words is "six hundred ninety-seven million, four hundred eighty-two thousand, five hundred fifty-seven".