261475794 has 24 divisors (see below), whose sum is σ = 566978880. Its totient is φ = 87089688.

The previous prime is 261475789. The next prime is 261475843. The reversal of 261475794 is 497574162.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21027 + ... + 31065.

It is an arithmetic number, because the mean of its divisors is an integer number (23624120).

Almost surely, 2^261475794 is an apocalyptic number.

261475794 is an abundant number, since it is smaller than the sum of its proper divisors (305503086).

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

261475794 is a wasteful number, since it uses less digits than its factorization.

261475794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11494 (or 11491 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 261475794 is about 16170.2131711366. The cubic root of 261475794 is about 639.4557498710.

The spelling of 261475794 in words is "two hundred sixty-one million, four hundred seventy-five thousand, seven hundred ninety-four".