609111140 has 48 divisors (see below), whose sum is σ = 1402531200. Its totient is φ = 220366080.

The previous prime is 609111127. The next prime is 609111193. The reversal of 609111140 is 41111906.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36824 + ... + 50736.

It is an arithmetic number, because the mean of its divisors is an integer number (29219400).

Almost surely, 2^609111140 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 609111140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (701265600).

609111140 is an abundant number, since it is smaller than the sum of its proper divisors (793420060).

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

609111140 is a wasteful number, since it uses less digits than its factorization.

609111140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14132 (or 14130 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 609111140 is about 24680.1770658154. The cubic root of 609111140 is about 847.6804765849.

The spelling of 609111140 in words is "six hundred nine million, one hundred eleven thousand, one hundred forty".