2856859 has 8 divisors (see below), whose sum is σ = 3065040. Its totient is φ = 2654496.

The previous prime is 2856857. The next prime is 2856863. The reversal of 2856859 is 9586582.

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 2856859 - 2¹ = 2856857 is a prime.

It is a super-3 number, since 3×2856859³ = 69949992742410743337, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2856857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 412 + ... + 2425.

It is an arithmetic number, because the mean of its divisors is an integer number (383130).

2^2856859 is an apocalyptic number.

2856859 is a deficient number, since it is larger than the sum of its proper divisors (208181).

2856859 is a wasteful number, since it uses less digits than its factorization.

2856859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2909.

The product of its digits is 172800, while the sum is 43.

The square root of 2856859 is about 1690.2245412962. The cubic root of 2856859 is about 141.8936418413.

The spelling of 2856859 in words is "two million, eight hundred fifty-six thousand, eight hundred fifty-nine".