5640920 has 16 divisors (see below), whose sum is σ = 12692160. Its totient is φ = 2256352.

The previous prime is 5640919. The next prime is 5640953. The reversal of 5640920 is 290465.

It is a self number, because there is not a number n which added to its sum of digits gives 5640920.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70472 + ... + 70551.

It is an arithmetic number, because the mean of its divisors is an integer number (793260).

Almost surely, 2^5640920 is an apocalyptic number.

It is an amenable number.

5640920 is an abundant number, since it is smaller than the sum of its proper divisors (7051240).

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

5640920 is a wasteful number, since it uses less digits than its factorization.

5640920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141034 (or 141030 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 5640920 is about 2375.0621044512. The cubic root of 5640920 is about 178.0122871626.

The spelling of 5640920 in words is "five million, six hundred forty thousand, nine hundred twenty".