5640975 has 48 divisors (see below), whose sum is σ = 10609440. Its totient is φ = 2937600.

The previous prime is 5640961. The next prime is 5640989. The reversal of 5640975 is 5790465.

5640975 is a `hidden beast` number, since 5 + 640 + 9 + 7 + 5 = 666.

5640975 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (5640961) and next prime (5640989).

It is not a de Polignac number, because 5640975 - 2⁹ = 5640463 is a prime.

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 41107 + ... + 41243.

It is an arithmetic number, because the mean of its divisors is an integer number (221030).

Almost surely, 2^5640975 is an apocalyptic number.

5640975 is a deficient number, since it is larger than the sum of its proper divisors (4968465).

5640975 is a wasteful number, since it uses less digits than its factorization.

5640975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 206 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 5640975 is about 2375.0736830675. The cubic root of 5640975 is about 178.0128657115.

The spelling of 5640975 in words is "five million, six hundred forty thousand, nine hundred seventy-five".