2608644 has 12 divisors (see below), whose sum is σ = 6086864. Its totient is φ = 869544.

The previous prime is 2608631. The next prime is 2608649. The reversal of 2608644 is 4468062.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (2608649) 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, 108682 + ... + 108705.

2^2608644 is an apocalyptic number.

It is an amenable number.

2608644 is an abundant number, since it is smaller than the sum of its proper divisors (3478220).

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

2608644 is a wasteful number, since it uses less digits than its factorization.

2608644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217394 (or 217392 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 2608644 is about 1615.1297161529. The cubic root of 2608644 is about 137.6591039809.

The spelling of 2608644 in words is "two million, six hundred eight thousand, six hundred forty-four".