5644872 has 24 divisors (see below), whose sum is σ = 15288390. Its totient is φ = 1881600.

The previous prime is 5644861. The next prime is 5644889. The reversal of 5644872 is 2784465.

5644872 is a `hidden beast` number, since 5 + 644 + 8 + 7 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2842596 + 2802276 = 1686^2 + 1674^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39129 + ... + 39272.

Almost surely, 2^5644872 is an apocalyptic number.

It is an amenable number.

5644872 is an abundant number, since it is smaller than the sum of its proper divisors (9643518).

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

5644872 is a wasteful number, since it uses less digits than its factorization.

5644872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78413 (or 78406 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 5644872 is about 2375.8939370267. The cubic root of 5644872 is about 178.0538489606.

It can be divided in two parts, 56448 and 72, that multiplied together give a square (4064256 = 2016²).

The spelling of 5644872 in words is "five million, six hundred forty-four thousand, eight hundred seventy-two".