5645838 has 32 divisors (see below), whose sum is σ = 12431232. Its totient is φ = 1695200.

The previous prime is 5645779. The next prime is 5645851. The reversal of 5645838 is 8385465.

It is a happy number.

Its product of digits (115200) is a multiple of the sum of its prime divisors (800).

It is a junction number, because it is equal to n+sod(n) for n = 5645796 and 5645805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8320 + ... + 8972.

It is an arithmetic number, because the mean of its divisors is an integer number (388476).

Almost surely, 2^5645838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5645838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6215616).

5645838 is an abundant number, since it is smaller than the sum of its proper divisors (6785394).

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

5645838 is a wasteful number, since it uses less digits than its factorization.

5645838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800.

The product of its digits is 115200, while the sum is 39.

The square root of 5645838 is about 2376.0972202332. The cubic root of 5645838 is about 178.0640050933.

The spelling of 5645838 in words is "five million, six hundred forty-five thousand, eight hundred thirty-eight".