2564626 has 8 divisors (see below), whose sum is σ = 3904560. Its totient is φ = 1263108.

The previous prime is 2564621. The next prime is 2564633. The reversal of 2564626 is 6264652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2564621) 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, 9436 + ... + 9703.

It is an arithmetic number, because the mean of its divisors is an integer number (488070).

2^2564626 is an apocalyptic number.

2564626 is a deficient number, since it is larger than the sum of its proper divisors (1339934).

2564626 is a wasteful number, since it uses less digits than its factorization.

2564626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19208.

The product of its digits is 17280, while the sum is 31.

The square root of 2564626 is about 1601.4449725170. Note that the first 3 decimals coincide. The cubic root of 2564626 is about 136.8804256170.

The spelling of 2564626 in words is "two million, five hundred sixty-four thousand, six hundred twenty-six".