2563684 has 12 divisors (see below), whose sum is σ = 4512508. Its totient is φ = 1274400.

The previous prime is 2563679. The next prime is 2563711. The reversal of 2563684 is 4863652.

It is a happy number.

2563684 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 396900 + 2166784 = 630^2 + 1472^2 .

It is a d-powerful number, because it can be written as 2¹⁸ + 5⁸ + 6⁵ + 3¹³ + 6⁶ + 8⁶ + 4² .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1047 + ... + 2494.

2^2563684 is an apocalyptic number.

It is an amenable number.

2563684 is a deficient number, since it is larger than the sum of its proper divisors (1948824).

2563684 is a wasteful number, since it uses less digits than its factorization.

2563684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3726 (or 3724 counting only the distinct ones).

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

The square root of 2563684 is about 1601.1508361176. The cubic root of 2563684 is about 136.8636646090.

Subtracting 2563684 from its reverse (4863652), we obtain a cube (2299968 = 132³).

The spelling of 2563684 in words is "two million, five hundred sixty-three thousand, six hundred eighty-four".