261236876 has 12 divisors (see below), whose sum is σ = 471912000. Its totient is φ = 126404880.

The previous prime is 261236873. The next prime is 261236879. The reversal of 261236876 is 678632162.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (261236873) and next prime (261236879).

It is not an unprimeable number, because it can be changed into a prime (261236873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1053251 + ... + 1053498.

It is an arithmetic number, because the mean of its divisors is an integer number (39326000).

Almost surely, 2^261236876 is an apocalyptic number.

It is an amenable number.

261236876 is a deficient number, since it is larger than the sum of its proper divisors (210675124).

261236876 is a wasteful number, since it uses less digits than its factorization.

261236876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2106784 (or 2106782 counting only the distinct ones).

The product of its digits is 145152, while the sum is 41.

The square root of 261236876 is about 16162.8238869326. The cubic root of 261236876 is about 639.2609274459.

The spelling of 261236876 in words is "two hundred sixty-one million, two hundred thirty-six thousand, eight hundred seventy-six".