697534447 has 2 divisors, whose sum is σ = 697534448. Its totient is φ = 697534446.

The previous prime is 697534427. The next prime is 697534489. The reversal of 697534447 is 744435796.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 697534447 - 2⁷ = 697534319 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 697534447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (697534417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348767223 + 348767224.

It is an arithmetic number, because the mean of its divisors is an integer number (348767224).

Almost surely, 2^697534447 is an apocalyptic number.

697534447 is a deficient number, since it is larger than the sum of its proper divisors (1).

697534447 is an equidigital number, since it uses as much as digits as its factorization.

697534447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2540160, while the sum is 49.

The square root of 697534447 is about 26410.8774371470. The cubic root of 697534447 is about 886.8603114251.

The spelling of 697534447 in words is "six hundred ninety-seven million, five hundred thirty-four thousand, four hundred forty-seven".