261331675 has 24 divisors (see below), whose sum is σ = 354263040. Its totient is φ = 189655200.

The previous prime is 261331669. The next prime is 261331687. The reversal of 261331675 is 576133162.

It is not a de Polignac number, because 261331675 - 2¹³ = 261323483 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 261331675.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 203686 + ... + 204964.

It is an arithmetic number, because the mean of its divisors is an integer number (14760960).

Almost surely, 2^261331675 is an apocalyptic number.

261331675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

261331675 is a deficient number, since it is larger than the sum of its proper divisors (92931365).

261331675 is a wasteful number, since it uses less digits than its factorization.

261331675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2043 (or 2038 counting only the distinct ones).

The product of its digits is 22680, while the sum is 34.

The square root of 261331675 is about 16165.7562458426. The cubic root of 261331675 is about 639.3382442074.

The spelling of 261331675 in words is "two hundred sixty-one million, three hundred thirty-one thousand, six hundred seventy-five".