261874761 has 8 divisors (see below), whose sum is σ = 349574400. Its totient is φ = 174379152.

The previous prime is 261874747. The next prime is 261874799. The reversal of 261874761 is 167478162.

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

It is not a de Polignac number, because 261874761 - 2⁵ = 261874729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (261874061) 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, 47986 + ... + 53163.

It is an arithmetic number, because the mean of its divisors is an integer number (43696800).

Almost surely, 2^261874761 is an apocalyptic number.

It is an amenable number.

261874761 is a deficient number, since it is larger than the sum of its proper divisors (87699639).

261874761 is a wasteful number, since it uses less digits than its factorization.

261874761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102015.

The product of its digits is 112896, while the sum is 42.

The square root of 261874761 is about 16182.5449481841. The cubic root of 261874761 is about 639.7808176856.

The spelling of 261874761 in words is "two hundred sixty-one million, eight hundred seventy-four thousand, seven hundred sixty-one".