616205660 has 48 divisors (see below), whose sum is σ = 1490227200. Its totient is φ = 209651520.

The previous prime is 616205641. The next prime is 616205669. The reversal of 616205660 is 66502616.

616205660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616205669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1541 + ... + 35139.

It is an arithmetic number, because the mean of its divisors is an integer number (31046400).

Almost surely, 2^616205660 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 616205660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (745113600).

616205660 is an abundant number, since it is smaller than the sum of its proper divisors (874021540).

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

616205660 is a wasteful number, since it uses less digits than its factorization.

616205660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33746 (or 33744 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 616205660 is about 24823.4900849981. The cubic root of 616205660 is about 850.9588533560.

The spelling of 616205660 in words is "six hundred sixteen million, two hundred five thousand, six hundred sixty".