697775 has 24 divisors (see below), whose sum is σ = 989520. Its totient is φ = 483840.

The previous prime is 697759. The next prime is 697787. The reversal of 697775 is 577796.

It is not a de Polignac number, because 697775 - 2⁴ = 697759 is a prime.

It is an Ulam number.

It is a zygodrome in base 4.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6119 + ... + 6231.

It is an arithmetic number, because the mean of its divisors is an integer number (41230).

2⁶⁹⁷⁷⁷⁵ is an apocalyptic number.

697775 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

697775 is a deficient number, since it is larger than the sum of its proper divisors (291745).

697775 is a wasteful number, since it uses less digits than its factorization.

697775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 150 counting only the distinct ones).

The product of its digits is 92610, while the sum is 41.

The square root of 697775 is about 835.3292763934. The cubic root of 697775 is about 88.6962247796.

The spelling of 697775 in words is "six hundred ninety-seven thousand, seven hundred seventy-five".