697599 has 16 divisors (see below), whose sum is σ = 1181440. Its totient is φ = 398520.

The previous prime is 697591. The next prime is 697601. The reversal of 697599 is 995796.

It is not a de Polignac number, because 697599 - 2³ = 697591 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 697599.

It is not an unprimeable number, because it can be changed into a prime (697591) 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 15 ways as a sum of consecutive naturals, for example, 1657 + ... + 2034.

It is an arithmetic number, because the mean of its divisors is an integer number (73840).

2⁶⁹⁷⁵⁹⁹ is an apocalyptic number.

697599 is a deficient number, since it is larger than the sum of its proper divisors (483841).

697599 is a wasteful number, since it uses less digits than its factorization.

697599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3707 (or 3701 counting only the distinct ones).

The product of its digits is 153090, while the sum is 45.

The square root of 697599 is about 835.2239220712. The cubic root of 697599 is about 88.6887668606.

It can be divided in two parts, 697 and 599, that added together give a 4-th power (1296 = 6⁴).

The spelling of 697599 in words is "six hundred ninety-seven thousand, five hundred ninety-nine".