268261 has 8 divisors (see below), whose sum is σ = 322880. Its totient is φ = 217728.

The previous prime is 268253. The next prime is 268267. The reversal of 268261 is 162862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 268261 - 2³ = 268253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 876 + ... + 1141.

It is an arithmetic number, because the mean of its divisors is an integer number (40360).

2²⁶⁸²⁶¹ is an apocalyptic number.

It is an amenable number.

268261 is a deficient number, since it is larger than the sum of its proper divisors (54619).

268261 is a wasteful number, since it uses less digits than its factorization.

268261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2043.

The product of its digits is 1152, while the sum is 25.

The square root of 268261 is about 517.9391856193. The cubic root of 268261 is about 64.4939801685.

It can be divided in two parts, 268 and 261, that added together give a square (529 = 23²).

The spelling of 268261 in words is "two hundred sixty-eight thousand, two hundred sixty-one".