263660 has 12 divisors (see below), whose sum is σ = 553728. Its totient is φ = 105456.

The previous prime is 263657. The next prime is 263677. The reversal of 263660 is 66362.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6572 + ... + 6611.

It is an arithmetic number, because the mean of its divisors is an integer number (46144).

2²⁶³⁶⁶⁰ is an apocalyptic number.

263660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

263660 is an abundant number, since it is smaller than the sum of its proper divisors (290068).

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

263660 is a wasteful number, since it uses less digits than its factorization.

263660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13192 (or 13190 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 263660 is about 513.4783344991. The cubic root of 263660 is about 64.1231353328.

The spelling of 263660 in words is "two hundred sixty-three thousand, six hundred sixty".