261795874 has 8 divisors (see below), whose sum is σ = 392817600. Its totient is φ = 130856676.

The previous prime is 261795871. The next prime is 261795881. The reversal of 261795874 is 478597162.

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

It is not an unprimeable number, because it can be changed into a prime (261795871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11974 + ... + 25825.

It is an arithmetic number, because the mean of its divisors is an integer number (49102200).

Almost surely, 2^261795874 is an apocalyptic number.

261795874 is a deficient number, since it is larger than the sum of its proper divisors (131021726).

261795874 is a wasteful number, since it uses less digits than its factorization.

261795874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41264.

The product of its digits is 846720, while the sum is 49.

The square root of 261795874 is about 16180.1073544028. The cubic root of 261795874 is about 639.7165688338.

The spelling of 261795874 in words is "two hundred sixty-one million, seven hundred ninety-five thousand, eight hundred seventy-four".