2160644 has 12 divisors (see below), whose sum is σ = 3791424. Its totient is φ = 1077384.

The previous prime is 2160629. The next prime is 2160671. The reversal of 2160644 is 4460612.

It is a happy number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2537 + ... + 3279.

It is an arithmetic number, because the mean of its divisors is an integer number (315952).

2^2160644 is an apocalyptic number.

It is an amenable number.

2160644 is a deficient number, since it is larger than the sum of its proper divisors (1630780).

2160644 is a wasteful number, since it uses less digits than its factorization.

2160644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474 (or 1472 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 2160644 is about 1469.9129225910. The cubic root of 2160644 is about 129.2789269396.

Subtracting 2160644 from its reverse (4460612), we obtain a cube (2299968 = 132³).

The spelling of 2160644 in words is "two million, one hundred sixty thousand, six hundred forty-four".