697957 has 8 divisors (see below), whose sum is σ = 766584. Its totient is φ = 631488.

The previous prime is 697951. The next prime is 697967. The reversal of 697957 is 759796.

697957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2401 + 695556 = 49^2 + 834^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 697957 - 2¹⁹ = 173669 is a prime.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (697951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183 + ... + 1195.

It is an arithmetic number, because the mean of its divisors is an integer number (95823).

2⁶⁹⁷⁹⁵⁷ is an apocalyptic number.

It is an amenable number.

697957 is a deficient number, since it is larger than the sum of its proper divisors (68627).

697957 is a wasteful number, since it uses less digits than its factorization.

697957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079.

The product of its digits is 119070, while the sum is 43.

The square root of 697957 is about 835.4382083673. The cubic root of 697957 is about 88.7039356269.

The spelling of 697957 in words is "six hundred ninety-seven thousand, nine hundred fifty-seven".