261876 has 24 divisors (see below), whose sum is σ = 619360. Its totient is φ = 86112.

The previous prime is 261847. The next prime is 261881. The reversal of 261876 is 678162.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

261876 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1590 + ... + 1746.

261876 is a Friedman number, since it can be written as 8^6-261-7, using all its digits and the basic arithmetic operations.

2²⁶¹⁸⁷⁶ is an apocalyptic number.

It is an amenable number.

261876 is an abundant number, since it is smaller than the sum of its proper divisors (357484).

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

261876 is a wasteful number, since it uses less digits than its factorization.

261876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303 (or 301 counting only the distinct ones).

The product of its digits is 4032, while the sum is 30.

The square root of 261876 is about 511.7382143245. The cubic root of 261876 is about 63.9781826676.

The spelling of 261876 in words is "two hundred sixty-one thousand, eight hundred seventy-six".