697257 has 12 divisors (see below), whose sum is σ = 1098864. Its totient is φ = 422520.

The previous prime is 697217. The next prime is 697259. The reversal of 697257 is 752796.

697257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 697257 - 2¹⁴ = 680873 is a prime.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 697257.

It is not an unprimeable number, because it can be changed into a prime (697259) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3423 + ... + 3620.

It is an arithmetic number, because the mean of its divisors is an integer number (91572).

2⁶⁹⁷²⁵⁷ is an apocalyptic number.

It is an amenable number.

697257 is a deficient number, since it is larger than the sum of its proper divisors (401607).

697257 is a wasteful number, since it uses less digits than its factorization.

697257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7060 (or 7057 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 697257 is about 835.0191614568. The cubic root of 697257 is about 88.6742711802.

The spelling of 697257 in words is "six hundred ninety-seven thousand, two hundred fifty-seven".