2256645 has 32 divisors (see below), whose sum is σ = 3907584. Its totient is φ = 1108800.

The previous prime is 2256637. The next prime is 2256673. The reversal of 2256645 is 5466522.

It is not a de Polignac number, because 2256645 - 2³ = 2256637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10590 + ... + 10800.

It is an arithmetic number, because the mean of its divisors is an integer number (122112).

2^2256645 is an apocalyptic number.

It is an amenable number.

2256645 is a deficient number, since it is larger than the sum of its proper divisors (1650939).

2256645 is a wasteful number, since it uses less digits than its factorization.

2256645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273.

The product of its digits is 14400, while the sum is 30.

The square root of 2256645 is about 1502.2133670022. The cubic root of 2256645 is about 131.1659416416.

The spelling of 2256645 in words is "two million, two hundred fifty-six thousand, six hundred forty-five".