261708 has 24 divisors (see below), whose sum is σ = 619248. Its totient is φ = 86016.

The previous prime is 261707. The next prime is 261713. The reversal of 261708 is 807162.

261708 is nontrivially palindromic in base 5.

It is not an unprimeable number, because it can be changed into a prime (261707) 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, 1260 + ... + 1452.

It is an arithmetic number, because the mean of its divisors is an integer number (25802).

2²⁶¹⁷⁰⁸ is an apocalyptic number.

It is an amenable number.

261708 is an abundant number, since it is smaller than the sum of its proper divisors (357540).

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

261708 is a wasteful number, since it uses less digits than its factorization.

261708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 261708 is about 511.5740415619. The cubic root of 261708 is about 63.9644985398.

It can be divided in two parts, 261 and 708, that added together give a palindrome (969).

The spelling of 261708 in words is "two hundred sixty-one thousand, seven hundred eight".