5991820 has 24 divisors (see below), whose sum is σ = 13323744. Its totient is φ = 2255616.

The previous prime is 5991779. The next prime is 5991823. The reversal of 5991820 is 281995.

5991820 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (5991823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8472 + ... + 9151.

It is an arithmetic number, because the mean of its divisors is an integer number (555156).

Almost surely, 2^5991820 is an apocalyptic number.

It is an amenable number.

5991820 is an abundant number, since it is smaller than the sum of its proper divisors (7331924).

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

5991820 is a wasteful number, since it uses less digits than its factorization.

5991820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17649 (or 17647 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 5991820 is about 2447.8194377854. The cubic root of 5991820 is about 181.6294436918.

The spelling of 5991820 in words is "five million, nine hundred ninety-one thousand, eight hundred twenty".