690268 has 12 divisors (see below), whose sum is σ = 1279152. Its totient is φ = 324800.

The previous prime is 690259. The next prime is 690269. The reversal of 690268 is 862096.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690269) by changing a digit.

690268 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5008 + ... + 5143.

It is an arithmetic number, because the mean of its divisors is an integer number (106596).

2⁶⁹⁰²⁶⁸ is an apocalyptic number.

690268 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

690268 is a deficient number, since it is larger than the sum of its proper divisors (588884).

690268 is a wasteful number, since it uses less digits than its factorization.

690268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10172 (or 10170 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 690268 is about 830.8236876739. The cubic root of 690268 is about 88.3769983083.

The spelling of 690268 in words is "six hundred ninety thousand, two hundred sixty-eight".