6181616 has 40 divisors (see below), whose sum is σ = 13853280. Its totient is φ = 2617344.

The previous prime is 6181613. The next prime is 6181619. The reversal of 6181616 is 6161816.

6181616 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (6181613) and next prime (6181619).

It is an alternating number because its digits alternate between even and odd.

6181616 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6181613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10580 + ... + 11148.

It is an arithmetic number, because the mean of its divisors is an integer number (346332).

Almost surely, 2^6181616 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 6181616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6926640).

6181616 is an abundant number, since it is smaller than the sum of its proper divisors (7671664).

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

6181616 is a wasteful number, since it uses less digits than its factorization.

6181616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681 (or 675 counting only the distinct ones).

The product of its digits is 1728, while the sum is 29.

The square root of 6181616 is about 2486.2855829530. The cubic root of 6181616 is about 183.5272995786.

The spelling of 6181616 in words is "six million, one hundred eighty-one thousand, six hundred sixteen".