2056869 has 12 divisors (see below), whose sum is σ = 2983500. Its totient is φ = 1365504.

The previous prime is 2056853. The next prime is 2056891. The reversal of 2056869 is 9686502.

It can be written as a sum of positive squares in 2 ways, for example, as 1476225 + 580644 = 1215^2 + 762^2 .

It is not a de Polignac number, because 2056869 - 2⁴ = 2056853 is a prime.

It is a super-2 number, since 2×2056869² = 8461420166322, which contains 22 as substring.

2056869 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2056829) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3787 + ... + 4295.

It is an arithmetic number, because the mean of its divisors is an integer number (248625).

2^2056869 is an apocalyptic number.

It is an amenable number.

2056869 is a deficient number, since it is larger than the sum of its proper divisors (926631).

2056869 is a wasteful number, since it uses less digits than its factorization.

2056869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964 (or 961 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 2056869 is about 1434.1788591386. The cubic root of 2056869 is about 127.1751360562.

The spelling of 2056869 in words is "two million, fifty-six thousand, eight hundred sixty-nine".