2056863 has 4 divisors (see below), whose sum is σ = 2742488. Its totient is φ = 1371240.

The previous prime is 2056853. The next prime is 2056891. The reversal of 2056863 is 3686502.

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

It is not a de Polignac number, because 2056863 - 2¹³ = 2048671 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2056863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2056843) 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, 342808 + ... + 342813.

It is an arithmetic number, because the mean of its divisors is an integer number (685622).

2^2056863 is an apocalyptic number.

2056863 is a deficient number, since it is larger than the sum of its proper divisors (685625).

2056863 is an equidigital number, since it uses as much as digits as its factorization.

2056863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685624.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 2056863 is about 1434.1767673477. The cubic root of 2056863 is about 127.1750123972.

The spelling of 2056863 in words is "two million, fifty-six thousand, eight hundred sixty-three".