697311 has 6 divisors (see below), whose sum is σ = 1007240. Its totient is φ = 464868.

The previous prime is 697303. The next prime is 697327. The reversal of 697311 is 113796.

It is not a de Polignac number, because 697311 - 2³ = 697303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (697351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38731 + ... + 38748.

2⁶⁹⁷³¹¹ is an apocalyptic number.

697311 is a deficient number, since it is larger than the sum of its proper divisors (309929).

697311 is a wasteful number, since it uses less digits than its factorization.

697311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77485 (or 77482 counting only the distinct ones).

The product of its digits is 1134, while the sum is 27.

The square root of 697311 is about 835.0514954181. The cubic root of 697311 is about 88.6765602870.

The spelling of 697311 in words is "six hundred ninety-seven thousand, three hundred eleven".