260440865 has 8 divisors (see below), whose sum is σ = 319178880. Its totient is φ = 203919472.

The previous prime is 260440853. The next prime is 260440871. The reversal of 260440865 is 568044062.

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

It is a cyclic number.

It is not a de Polignac number, because 260440865 - 2¹⁰ = 260439841 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 553895 + ... + 554364.

It is an arithmetic number, because the mean of its divisors is an integer number (39897360).

Almost surely, 2^260440865 is an apocalyptic number.

It is an amenable number.

260440865 is a deficient number, since it is larger than the sum of its proper divisors (58738015).

260440865 is a wasteful number, since it uses less digits than its factorization.

260440865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108311.

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 260440865 is about 16138.1803497173. The cubic root of 260440865 is about 638.6109726872.

The spelling of 260440865 in words is "two hundred sixty million, four hundred forty thousand, eight hundred sixty-five".