253690 has 16 divisors (see below), whose sum is σ = 476928. Its totient is φ = 96976.

The previous prime is 253681. The next prime is 253703. The reversal of 253690 is 96352.

It is a super-2 number, since 2×253690² = 128717232200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322 + ... + 781.

It is an arithmetic number, because the mean of its divisors is an integer number (29808).

2²⁵³⁶⁹⁰ is an apocalyptic number.

253690 is a deficient number, since it is larger than the sum of its proper divisors (223238).

253690 is a wasteful number, since it uses less digits than its factorization.

253690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 253690 is about 503.6764834693. The cubic root of 253690 is about 63.3044805479.

The spelling of 253690 in words is "two hundred fifty-three thousand, six hundred ninety".