6611620 has 48 divisors (see below), whose sum is σ = 14837760. Its totient is φ = 2467584.

The previous prime is 6611611. The next prime is 6611621. The reversal of 6611620 is 261166.

It is a junction number, because it is equal to n+sod(n) for n = 6611591 and 6611600.

It is not an unprimeable number, because it can be changed into a prime (6611621) 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, 48192 + ... + 48328.

It is an arithmetic number, because the mean of its divisors is an integer number (309120).

Almost surely, 2^6611620 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 6611620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7418880).

6611620 is an abundant number, since it is smaller than the sum of its proper divisors (8226140).

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

6611620 is a wasteful number, since it uses less digits than its factorization.

6611620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292 (or 290 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 6611620 is about 2571.3070606211. The cubic root of 6611620 is about 187.6877645005.

Adding to 6611620 its reverse (261166), we get a palindrome (6872786).

The spelling of 6611620 in words is "six million, six hundred eleven thousand, six hundred twenty".