5991780 has 48 divisors (see below), whose sum is σ = 17236800. Its totient is φ = 1554048.

The previous prime is 5991779. The next prime is 5991823. The reversal of 5991780 is 871995.

It is a happy number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 871 + ... + 3569.

It is an arithmetic number, because the mean of its divisors is an integer number (359100).

Almost surely, 2^5991780 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 5991780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8618400).

5991780 is an abundant number, since it is smaller than the sum of its proper divisors (11245020).

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

5991780 is a wasteful number, since it uses less digits than its factorization.

5991780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2748 (or 2746 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 39.

The square root of 5991780 is about 2447.8112672345. The cubic root of 5991780 is about 181.6290395189.

The spelling of 5991780 in words is "five million, nine hundred ninety-one thousand, seven hundred eighty".