690957 has 16 divisors (see below), whose sum is σ = 1036480. Its totient is φ = 454896.

The previous prime is 690953. The next prime is 690997. The reversal of 690957 is 759096.

It is not a de Polignac number, because 690957 - 2² = 690953 is a prime.

It is a super-3 number, since 3×690957³ = 989633339351692479, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4158 + ... + 4320.

It is an arithmetic number, because the mean of its divisors is an integer number (64780).

2⁶⁹⁰⁹⁵⁷ is an apocalyptic number.

It is an amenable number.

690957 is a deficient number, since it is larger than the sum of its proper divisors (345523).

690957 is a wasteful number, since it uses less digits than its factorization.

690957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 690957 is about 831.2382329994. The cubic root of 690957 is about 88.4063934143.

The spelling of 690957 in words is "six hundred ninety thousand, nine hundred fifty-seven".