5640845 has 8 divisors (see below), whose sum is σ = 7736064. Its totient is φ = 3867984.

The previous prime is 5640839. The next prime is 5640857. The reversal of 5640845 is 5480465.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5640845 - 2⁶ = 5640781 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80549 + ... + 80618.

It is an arithmetic number, because the mean of its divisors is an integer number (967008).

Almost surely, 2^5640845 is an apocalyptic number.

It is an amenable number.

5640845 is a deficient number, since it is larger than the sum of its proper divisors (2095219).

5640845 is a wasteful number, since it uses less digits than its factorization.

5640845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161179.

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 5640845 is about 2375.0463153379. The cubic root of 5640845 is about 178.0114982262.

The spelling of 5640845 in words is "five million, six hundred forty thousand, eight hundred forty-five".