591216 has 40 divisors (see below), whose sum is σ = 1554960. Its totient is φ = 193536.

The previous prime is 591193. The next prime is 591233. The reversal of 591216 is 612195.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5176 + ... + 5288.

It is an arithmetic number, because the mean of its divisors is an integer number (38874).

2⁵⁹¹²¹⁶ 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 591216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (777480).

591216 is an abundant number, since it is smaller than the sum of its proper divisors (963744).

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

591216 is a wasteful number, since it uses less digits than its factorization.

591216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233 (or 227 counting only the distinct ones).

The product of its digits is 540, while the sum is 24.

The square root of 591216 is about 768.9057159366. The cubic root of 591216 is about 83.9296463076.

It can be divided in two parts, 59 and 1216, that added together give a triangular number (1275 = T₅₀).

The spelling of 591216 in words is "five hundred ninety-one thousand, two hundred sixteen".