260865863 has 4 divisors (see below), whose sum is σ = 260989848. Its totient is φ = 260741880.

The previous prime is 260865859. The next prime is 260865889. The reversal of 260865863 is 368568062.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 368568062 = 2 ⋅184284031.

It is a cyclic number.

It is not a de Polignac number, because 260865863 - 2² = 260865859 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260865823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58781 + ... + 63062.

It is an arithmetic number, because the mean of its divisors is an integer number (65247462).

Almost surely, 2^260865863 is an apocalyptic number.

260865863 is a deficient number, since it is larger than the sum of its proper divisors (123985).

260865863 is a wasteful number, since it uses less digits than its factorization.

260865863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123984.

The product of its (nonzero) digits is 414720, while the sum is 44.

The square root of 260865863 is about 16151.3424519450. The cubic root of 260865863 is about 638.9581543633.

The spelling of 260865863 in words is "two hundred sixty million, eight hundred sixty-five thousand, eight hundred sixty-three".