611320 has 64 divisors (see below), whose sum is σ = 1555200. Its totient is φ = 215040.

The previous prime is 611297. The next prime is 611323. The reversal of 611320 is 23116.

It is a self number, because there is not a number n which added to its sum of digits gives 611320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19705 + ... + 19735.

It is an arithmetic number, because the mean of its divisors is an integer number (24300).

2⁶¹¹³²⁰ 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 611320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (777600).

611320 is an abundant number, since it is smaller than the sum of its proper divisors (943880).

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

611320 is a wasteful number, since it uses less digits than its factorization.

611320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 611320 is about 781.8695543376. The cubic root of 611320 is about 84.8703907055.

Adding to 611320 its reverse (23116), we get a palindrome (634436).

The spelling of 611320 in words is "six hundred eleven thousand, three hundred twenty".