2560859867 has 4 divisors (see below), whose sum is σ = 2572141416. Its totient is φ = 2549578320.

The previous prime is 2560859801. The next prime is 2560859869. The reversal of 2560859867 is 7689580652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2560859867 - 2²⁰ = 2559811291 is a prime.

It is a super-2 number, since 2×2560859867² = 13116006516822515378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2560859869) 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, 5640434 + ... + 5640887.

It is an arithmetic number, because the mean of its divisors is an integer number (643035354).

Almost surely, 2^2560859867 is an apocalyptic number.

2560859867 is a deficient number, since it is larger than the sum of its proper divisors (11281549).

2560859867 is a wasteful number, since it uses less digits than its factorization.

2560859867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11281548.

The product of its (nonzero) digits is 7257600, while the sum is 56.

The square root of 2560859867 is about 50604.9391561733. The cubic root of 2560859867 is about 1368.1339018512.

The spelling of 2560859867 in words is "two billion, five hundred sixty million, eight hundred fifty-nine thousand, eight hundred sixty-seven".