260515565 has 16 divisors (see below), whose sum is σ = 333056448. Its totient is φ = 194939136.

The previous prime is 260515561. The next prime is 260515597. The reversal of 260515565 is 565515062.

It is not a de Polignac number, because 260515565 - 2² = 260515561 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260515561) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4454 + ... + 23256.

It is an arithmetic number, because the mean of its divisors is an integer number (20816028).

Almost surely, 2^260515565 is an apocalyptic number.

It is an amenable number.

260515565 is a deficient number, since it is larger than the sum of its proper divisors (72540883).

260515565 is a wasteful number, since it uses less digits than its factorization.

260515565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18988.

The product of its (nonzero) digits is 45000, while the sum is 35.

The square root of 260515565 is about 16140.4945711090. The cubic root of 260515565 is about 638.6720226041.

The spelling of 260515565 in words is "two hundred sixty million, five hundred fifteen thousand, five hundred sixty-five".