8621616 has 40 divisors (see below), whose sum is σ = 22699440. Its totient is φ = 2818816.

The previous prime is 8621609. The next prime is 8621617. The reversal of 8621616 is 6161268.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (8621617) 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, 850 + ... + 4238.

It is an arithmetic number, because the mean of its divisors is an integer number (567486).

Almost surely, 2^8621616 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 8621616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11349720).

8621616 is an abundant number, since it is smaller than the sum of its proper divisors (14077824).

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

8621616 is a wasteful number, since it uses less digits than its factorization.

8621616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3453 (or 3447 counting only the distinct ones).

The product of its digits is 3456, while the sum is 30.

The square root of 8621616 is about 2936.2588441757. The cubic root of 8621616 is about 205.0514723021.

The spelling of 8621616 in words is "eight million, six hundred twenty-one thousand, six hundred sixteen".