261080674 has 8 divisors (see below), whose sum is σ = 392598828. Its totient is φ = 130214400.

The previous prime is 261080663. The next prime is 261080681. The reversal of 261080674 is 476080162.

It can be written as a sum of positive squares in 2 ways, for example, as 189255049 + 71825625 = 13757^2 + 8475^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161967 + ... + 163570.

Almost surely, 2^261080674 is an apocalyptic number.

261080674 is a deficient number, since it is larger than the sum of its proper divisors (131518154).

261080674 is a wasteful number, since it uses less digits than its factorization.

261080674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325940.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 261080674 is about 16157.9910261146. The cubic root of 261080674 is about 639.1334904297.

The spelling of 261080674 in words is "two hundred sixty-one million, eighty thousand, six hundred seventy-four".