261675168 has 24 divisors (see below), whose sum is σ = 686897568. Its totient is φ = 87225024.

The previous prime is 261675131. The next prime is 261675191. The reversal of 261675168 is 861576162.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

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, 1362796 + ... + 1362987.

It is an arithmetic number, because the mean of its divisors is an integer number (28620732).

Almost surely, 2^261675168 is an apocalyptic number.

It is an amenable number.

261675168 is an abundant number, since it is smaller than the sum of its proper divisors (425222400).

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

261675168 is a wasteful number, since it uses less digits than its factorization.

261675168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2725796 (or 2725788 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The square root of 261675168 is about 16176.3768502097. The cubic root of 261675168 is about 639.6182358622.

The spelling of 261675168 in words is "two hundred sixty-one million, six hundred seventy-five thousand, one hundred sixty-eight".