263860 has 24 divisors (see below), whose sum is σ = 564480. Its totient is φ = 103584.

The previous prime is 263849. The next prime is 263863. The reversal of 263860 is 68362.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263863) by changing a digit.

263860 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1497 + ... + 1663.

It is an arithmetic number, because the mean of its divisors is an integer number (23520).

2²⁶³⁸⁶⁰ is an apocalyptic number.

263860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

263860 is an abundant number, since it is smaller than the sum of its proper divisors (300620).

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

263860 is a wasteful number, since it uses less digits than its factorization.

263860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 263860 is about 513.6730477648. The cubic root of 263860 is about 64.1393448270.

The spelling of 263860 in words is "two hundred sixty-three thousand, eight hundred sixty".