697397 has 2 divisors, whose sum is σ = 697398. Its totient is φ = 697396.

The previous prime is 697387. The next prime is 697399. The reversal of 697397 is 793796.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 568516 + 128881 = 754^2 + 359^2 .

It is a cyclic number.

It is not a de Polignac number, because 697397 - 2⁴ = 697381 is a prime.

Together with 697399, it forms a pair of twin primes.

It is a Chen prime.

It is a nialpdrome in base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 697397.

It is not a weakly prime, because it can be changed into another prime (697399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348698 + 348699.

It is an arithmetic number, because the mean of its divisors is an integer number (348699).

2⁶⁹⁷³⁹⁷ is an apocalyptic number.

It is an amenable number.

697397 is a deficient number, since it is larger than the sum of its proper divisors (1).

697397 is an equidigital number, since it uses as much as digits as its factorization.

697397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 71442, while the sum is 41.

The square root of 697397 is about 835.1029876608. The cubic root of 697397 is about 88.6802056574.

The spelling of 697397 in words is "six hundred ninety-seven thousand, three hundred ninety-seven".