2625644 has 24 divisors (see below), whose sum is σ = 5322240. Its totient is φ = 1110096.

The previous prime is 2625643. The next prime is 2625653. The reversal of 2625644 is 4465262.

It is not an unprimeable number, because it can be changed into a prime (2625641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1619 + ... + 2805.

It is an arithmetic number, because the mean of its divisors is an integer number (221760).

2^2625644 is an apocalyptic number.

It is an amenable number.

2625644 is an abundant number, since it is smaller than the sum of its proper divisors (2696596).

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

2625644 is a wasteful number, since it uses less digits than its factorization.

2625644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1277 (or 1275 counting only the distinct ones).

The product of its digits is 11520, while the sum is 29.

The square root of 2625644 is about 1620.3839051287. The cubic root of 2625644 is about 137.9574888311.

The spelling of 2625644 in words is "two million, six hundred twenty-five thousand, six hundred forty-four".