5664820 has 48 divisors (see below), whose sum is σ = 13926528. Its totient is φ = 1895040.

The previous prime is 5664817. The next prime is 5664823. The reversal of 5664820 is 284665.

It is an interprime number because it is at equal distance from previous prime (5664817) and next prime (5664823).

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5664823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5550 + ... + 6490.

It is an arithmetic number, because the mean of its divisors is an integer number (290136).

Almost surely, 2^5664820 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 5664820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6963264).

5664820 is an abundant number, since it is smaller than the sum of its proper divisors (8261708).

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

5664820 is a wasteful number, since it uses less digits than its factorization.

5664820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000 (or 998 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 5664820 is about 2380.0882336586. The cubic root of 5664820 is about 178.2633395411.

The spelling of 5664820 in words is "five million, six hundred sixty-four thousand, eight hundred twenty".