253660 has 24 divisors (see below), whose sum is σ = 581616. Its totient is φ = 92160.

The previous prime is 253651. The next prime is 253661. The reversal of 253660 is 66352.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253661) 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 7 ways as a sum of consecutive naturals, for example, 357 + ... + 796.

It is an arithmetic number, because the mean of its divisors is an integer number (24234).

2²⁵³⁶⁶⁰ is an apocalyptic number.

253660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253660 is an abundant number, since it is smaller than the sum of its proper divisors (327956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

253660 is a wasteful number, since it uses less digits than its factorization.

253660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1173 (or 1171 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 253660 is about 503.6467015677. The cubic root of 253660 is about 63.3019851016.

The spelling of 253660 in words is "two hundred fifty-three thousand, six hundred sixty".