2564836 has 12 divisors (see below), whose sum is σ = 4499712. Its totient is φ = 1279208.

The previous prime is 2564831. The next prime is 2564843. The reversal of 2564836 is 6384652.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2564831) 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, 2541 + ... + 3403.

It is an arithmetic number, because the mean of its divisors is an integer number (374976).

2^2564836 is an apocalyptic number.

It is an amenable number.

2564836 is a deficient number, since it is larger than the sum of its proper divisors (1934876).

2564836 is a wasteful number, since it uses less digits than its factorization.

2564836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610 (or 1608 counting only the distinct ones).

The product of its digits is 34560, while the sum is 34.

The square root of 2564836 is about 1601.5105369619. The cubic root of 2564836 is about 136.8841615880.

It can be divided in two parts, 25 and 64836, that multiplied together give a triangular number (1620900 = T₁₈₀₀).

The spelling of 2564836 in words is "two million, five hundred sixty-four thousand, eight hundred thirty-six".