697231 has 4 divisors (see below), whose sum is σ = 699192. Its totient is φ = 695272.

The previous prime is 697217. The next prime is 697259. The reversal of 697231 is 132796.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 697231 - 2⁹ = 696719 is a prime.

It is a super-2 number, since 2×697231² = 972262134722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 697231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (697201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280 + ... + 1213.

It is an arithmetic number, because the mean of its divisors is an integer number (174798).

2⁶⁹⁷²³¹ is an apocalyptic number.

697231 is a deficient number, since it is larger than the sum of its proper divisors (1961).

697231 is a wasteful number, since it uses less digits than its factorization.

697231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1960.

The product of its digits is 2268, while the sum is 28.

The square root of 697231 is about 835.0035928066. The cubic root of 697231 is about 88.6731689756.

The spelling of 697231 in words is "six hundred ninety-seven thousand, two hundred thirty-one".