263901 has 12 divisors (see below), whose sum is σ = 387296. Its totient is φ = 159720.

The previous prime is 263899. The next prime is 263909. The reversal of 263901 is 109362.

263901 is a nontrivial binomial coefficient, being equal to C(727, 2).

It is not a de Polignac number, because 263901 - 2¹ = 263899 is a prime.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1 + ... + 726.

2²⁶³⁹⁰¹ is an apocalyptic number.

263901 is the 726-th triangular number.

It is an amenable number.

263901 is a deficient number, since it is larger than the sum of its proper divisors (123395).

263901 is a wasteful number, since it uses less digits than its factorization.

263901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752 (or 741 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 263901 is about 513.7129548688. The cubic root of 263901 is about 64.1426667615.

It can be divided in two parts, 2 and 63901, that added together give a triangular number (63903 = T₃₅₇).

The spelling of 263901 in words is "two hundred sixty-three thousand, nine hundred one".