697439 has 4 divisors (see below), whose sum is σ = 709320. Its totient is φ = 685560.

The previous prime is 697423. The next prime is 697441. The reversal of 697439 is 934796.

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 697439 - 2⁴ = 697423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 697439.

It is not an unprimeable number, because it can be changed into a prime (697409) 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, 5852 + ... + 5969.

It is an arithmetic number, because the mean of its divisors is an integer number (177330).

2⁶⁹⁷⁴³⁹ is an apocalyptic number.

697439 is a deficient number, since it is larger than the sum of its proper divisors (11881).

697439 is a wasteful number, since it uses less digits than its factorization.

697439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11880.

The product of its digits is 40824, while the sum is 38.

The square root of 697439 is about 835.1281338813. The cubic root of 697439 is about 88.6819858456.

The spelling of 697439 in words is "six hundred ninety-seven thousand, four hundred thirty-nine".