697864 has 16 divisors (see below), whose sum is σ = 1325520. Its totient is φ = 344400.

The previous prime is 697831. The next prime is 697877. The reversal of 697864 is 468796.

It is a nialpdrome in base 15.

It is an unprimeable number.

697864 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139 + ... + 1189.

It is an arithmetic number, because the mean of its divisors is an integer number (82845).

2⁶⁹⁷⁸⁶⁴ is an apocalyptic number.

It is an amenable number.

697864 is a deficient number, since it is larger than the sum of its proper divisors (627656).

697864 is a wasteful number, since it uses less digits than its factorization.

697864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140 (or 1136 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 697864 is about 835.3825471004. The cubic root of 697864 is about 88.6999956362.

The spelling of 697864 in words is "six hundred ninety-seven thousand, eight hundred sixty-four".