611980 has 24 divisors (see below), whose sum is σ = 1321488. Its totient is φ = 237888.

The previous prime is 611977. The next prime is 611993. The reversal of 611980 is 89116.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327 + ... + 1153.

It is an arithmetic number, because the mean of its divisors is an integer number (55062).

2⁶¹¹⁹⁸⁰ 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 611980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (660744).

611980 is an abundant number, since it is smaller than the sum of its proper divisors (709508).

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

611980 is a wasteful number, since it uses less digits than its factorization.

611980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873 (or 871 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 611980 is about 782.2915057701. The cubic root of 611980 is about 84.9009226210.

The spelling of 611980 in words is "six hundred eleven thousand, nine hundred eighty".