5640775 has 12 divisors (see below), whose sum is σ = 7994032. Its totient is φ = 3867840.

The previous prime is 5640769. The next prime is 5640779. The reversal of 5640775 is 5770465.

It is not a de Polignac number, because 5640775 - 2⁵ = 5640743 is a prime.

It is a Duffinian number.

5640775 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 5640775.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5640779) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15942 + ... + 16291.

Almost surely, 2^5640775 is an apocalyptic number.

5640775 is a deficient number, since it is larger than the sum of its proper divisors (2353257).

5640775 is a wasteful number, since it uses less digits than its factorization.

5640775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32250 (or 32245 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 5640775 is about 2375.0315787374. The cubic root of 5640775 is about 178.0107618793.

The spelling of 5640775 in words is "five million, six hundred forty thousand, seven hundred seventy-five".