697399 has 2 divisors, whose sum is σ = 697400. Its totient is φ = 697398.

The previous prime is 697397. The next prime is 697409. The reversal of 697399 is 993796.

697399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 697399 - 2¹ = 697397 is a prime.

Together with 697397, it forms a pair of twin primes.

It is a nialpdrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (697397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348699 + 348700.

It is an arithmetic number, because the mean of its divisors is an integer number (348700).

2⁶⁹⁷³⁹⁹ is an apocalyptic number.

697399 is a deficient number, since it is larger than the sum of its proper divisors (1).

697399 is an equidigital number, since it uses as much as digits as its factorization.

697399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 91854, while the sum is 43.

The square root of 697399 is about 835.1041851170. The cubic root of 697399 is about 88.6802904299.

The spelling of 697399 in words is "six hundred ninety-seven thousand, three hundred ninety-nine".