5645720 has 64 divisors (see below), whose sum is σ = 13651200. Its totient is φ = 2096640.

The previous prime is 5645713. The next prime is 5645723. The reversal of 5645720 is 275465.

5645720 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a zygodrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5645723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35882 + ... + 36038.

It is an arithmetic number, because the mean of its divisors is an integer number (213300).

Almost surely, 2^5645720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5645720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6825600).

5645720 is an abundant number, since it is smaller than the sum of its proper divisors (8005480).

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

5645720 is a wasteful number, since it uses less digits than its factorization.

5645720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 5645720 is about 2376.0723894696. The cubic root of 5645720 is about 178.0627645512.

The spelling of 5645720 in words is "five million, six hundred forty-five thousand, seven hundred twenty".