2725664 has 24 divisors (see below), whose sum is σ = 5649840. Its totient is φ = 1290816.

The previous prime is 2725649. The next prime is 2725669. The reversal of 2725664 is 4665272.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2725664.

It is not an unprimeable number, because it can be changed into a prime (2725669) 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, 1634 + ... + 2849.

It is an arithmetic number, because the mean of its divisors is an integer number (235410).

2^2725664 is an apocalyptic number.

It is an amenable number.

2725664 is an abundant number, since it is smaller than the sum of its proper divisors (2924176).

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

2725664 is a wasteful number, since it uses less digits than its factorization.

2725664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4512 (or 4504 counting only the distinct ones).

The product of its digits is 20160, while the sum is 32.

The square root of 2725664 is about 1650.9585094726. The cubic root of 2725664 is about 139.6874660884.

The spelling of 2725664 in words is "two million, seven hundred twenty-five thousand, six hundred sixty-four".