2499644 has 12 divisors (see below), whose sum is σ = 4999344. Its totient is φ = 1071264.

The previous prime is 2499643. The next prime is 2499661. The reversal of 2499644 is 4469942.

2499644 is an admirable number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2499598 and 2499607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2499641) 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, 44609 + ... + 44664.

It is an arithmetic number, because the mean of its divisors is an integer number (416612).

2^2499644 is an apocalyptic number.

It is an amenable number.

2499644 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2499644 is a wasteful number, since it uses less digits than its factorization.

2499644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89284 (or 89282 counting only the distinct ones).

The product of its digits is 62208, while the sum is 38.

The square root of 2499644 is about 1581.0262489915. The cubic root of 2499644 is about 135.7144383061.

The spelling of 2499644 in words is "two million, four hundred ninety-nine thousand, six hundred forty-four".