2564536 has 16 divisors (see below), whose sum is σ = 5178600. Its totient is φ = 1183584.

The previous prime is 2564521. The next prime is 2564539. The reversal of 2564536 is 6354652.

It is a junction number, because it is equal to n+sod(n) for n = 2564498 and 2564507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2564539) 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, 12226 + ... + 12433.

2^2564536 is an apocalyptic number.

2564536 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2564536 is an abundant number, since it is smaller than the sum of its proper divisors (2614064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2564536 is a wasteful number, since it uses less digits than its factorization.

2564536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24678 (or 24674 counting only the distinct ones).

The product of its digits is 21600, while the sum is 31.

The square root of 2564536 is about 1601.4168726475. The cubic root of 2564536 is about 136.8788244242.

The spelling of 2564536 in words is "two million, five hundred sixty-four thousand, five hundred thirty-six".