611380 has 48 divisors (see below), whose sum is σ = 1604736. Its totient is φ = 190080.

The previous prime is 611333. The next prime is 611389. The reversal of 611380 is 83116.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611389) by changing a digit.

611380 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1342 + ... + 1738.

It is an arithmetic number, because the mean of its divisors is an integer number (33432).

2⁶¹¹³⁸⁰ 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 611380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (802368).

611380 is an abundant number, since it is smaller than the sum of its proper divisors (993356).

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

611380 is a wasteful number, since it uses less digits than its factorization.

611380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424 (or 422 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 611380 is about 781.9079229679. The cubic root of 611380 is about 84.8731672420.

Adding to 611380 its product of nonzero digits (144), we get a square (611524 = 782²).

Adding to 611380 its reverse (83116), we get a palindrome (694496).

It can be divided in two parts, 61 and 1380, that added together give a palindrome (1441).

The spelling of 611380 in words is "six hundred eleven thousand, three hundred eighty".