2566436 has 12 divisors (see below), whose sum is σ = 4601100. Its totient is φ = 1251840.

The previous prime is 2566433. The next prime is 2566469. The reversal of 2566436 is 6346652.

It can be written as a sum of positive squares in 2 ways, for example, as 256036 + 2310400 = 506^2 + 1520^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a d-powerful number, because it can be written as 2²¹ + 5⁵ + 6⁴ + 6⁵ + 4 + 3¹¹ + 6⁷ .

It is not an unprimeable number, because it can be changed into a prime (2566433) 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, 7661 + ... + 7988.

It is an arithmetic number, because the mean of its divisors is an integer number (383425).

2^2566436 is an apocalyptic number.

It is an amenable number.

2566436 is a deficient number, since it is larger than the sum of its proper divisors (2034664).

2566436 is a wasteful number, since it uses less digits than its factorization.

2566436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15694 (or 15692 counting only the distinct ones).

The product of its digits is 25920, while the sum is 32.

The square root of 2566436 is about 1602.0099874845. The cubic root of 2566436 is about 136.9126194351.

Subtracting from 2566436 its sum of digits (32), we obtain a square (2566404 = 1602²).

The spelling of 2566436 in words is "two million, five hundred sixty-six thousand, four hundred thirty-six".