2560858861 has 8 divisors (see below), whose sum is σ = 2815663104. Its totient is φ = 2309721120.

The previous prime is 2560858849. The next prime is 2560858877. The reversal of 2560858861 is 1688580652.

It is a happy number.

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 2560858861 - 2⁵ = 2560858829 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 (2560858831) 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 7 ways as a sum of consecutive naturals, for example, 915160 + ... + 917953.

It is an arithmetic number, because the mean of its divisors is an integer number (351957888).

Almost surely, 2^2560858861 is an apocalyptic number.

It is an amenable number.

2560858861 is a deficient number, since it is larger than the sum of its proper divisors (254804243).

2560858861 is a wasteful number, since it uses less digits than its factorization.

2560858861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1833251.

The product of its (nonzero) digits is 921600, while the sum is 49.

The square root of 2560858861 is about 50604.9292164311. The cubic root of 2560858861 is about 1368.1337227001.

The spelling of 2560858861 in words is "two billion, five hundred sixty million, eight hundred fifty-eight thousand, eight hundred sixty-one".