245660 has 24 divisors (see below), whose sum is σ = 526176. Its totient is φ = 96320.

The previous prime is 245653. The next prime is 245671. The reversal of 245660 is 66542.

It is a congruent number.

It is an unprimeable number.

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, 1334 + ... + 1506.

It is an arithmetic number, because the mean of its divisors is an integer number (21924).

2²⁴⁵⁶⁶⁰ is an apocalyptic number.

245660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245660 is an abundant number, since it is smaller than the sum of its proper divisors (280516).

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

245660 is a wasteful number, since it uses less digits than its factorization.

245660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253 (or 251 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 245660 is about 495.6409991113. The cubic root of 245660 is about 62.6293852996.

The spelling of 245660 in words is "two hundred forty-five thousand, six hundred sixty".