5640684 has 72 divisors (see below), whose sum is σ = 15685488. Its totient is φ = 1572480.

The previous prime is 5640683. The next prime is 5640689. The reversal of 5640684 is 4860465.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (5640683) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 31074 + ... + 31254.

It is an arithmetic number, because the mean of its divisors is an integer number (217854).

Almost surely, 2^5640684 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 5640684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7842744).

5640684 is an abundant number, since it is smaller than the sum of its proper divisors (10044804).

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

5640684 is a wasteful number, since it uses less digits than its factorization.

5640684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255 (or 246 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 5640684 is about 2375.0124210202. The cubic root of 5640684 is about 178.0098046192.

The spelling of 5640684 in words is "five million, six hundred forty thousand, six hundred eighty-four".