697489307 has 2 divisors, whose sum is σ = 697489308. Its totient is φ = 697489306.

The previous prime is 697489217. The next prime is 697489313. The reversal of 697489307 is 703984796.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 697489307 - 2¹² = 697485211 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (697489337) 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, 348744653 + 348744654.

It is an arithmetic number, because the mean of its divisors is an integer number (348744654).

Almost surely, 2^697489307 is an apocalyptic number.

697489307 is a deficient number, since it is larger than the sum of its proper divisors (1).

697489307 is an equidigital number, since it uses as much as digits as its factorization.

697489307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2286144, while the sum is 53.

The square root of 697489307 is about 26410.0228511828. The cubic root of 697489307 is about 886.8411803565.

It can be divided in two parts, 697489 and 307, that added together give a palindrome (697796).

The spelling of 697489307 in words is "six hundred ninety-seven million, four hundred eighty-nine thousand, three hundred seven".