2549664 has 96 divisors (see below), whose sum is σ = 8043840. Its totient is φ = 781056.

The previous prime is 2549647. The next prime is 2549669. The reversal of 2549664 is 4669452.

2549664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a d-powerful number, because it can be written as 2¹¹ + 5⁹ + 4 + 9⁶ + 6 + 6⁶ + 4⁷ .

It is not an unprimeable number, because it can be changed into a prime (2549669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11119 + ... + 11345.

It is an arithmetic number, because the mean of its divisors is an integer number (83790).

2^2549664 is an apocalyptic number.

2549664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2549664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4021920).

2549664 is an abundant number, since it is smaller than the sum of its proper divisors (5494176).

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

2549664 is a wasteful number, since it uses less digits than its factorization.

2549664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259 (or 245 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 2549664 is about 1596.7667331204. The cubic root of 2549664 is about 136.6137199887.

The spelling of 2549664 in words is "two million, five hundred forty-nine thousand, six hundred sixty-four".