8660220 has 96 divisors (see below), whose sum is σ = 25740288. Its totient is φ = 2172672.

The previous prime is 8660203. The next prime is 8660221. The reversal of 8660220 is 220668.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8660221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104299 + ... + 104381.

It is an arithmetic number, because the mean of its divisors is an integer number (268128).

Almost surely, 2^8660220 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 8660220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12870144).

8660220 is an abundant number, since it is smaller than the sum of its proper divisors (17080068).

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

8660220 is a wasteful number, since it uses less digits than its factorization.

8660220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 8660220 is about 2942.8251731967. The cubic root of 8660220 is about 205.3570616401.

Adding to 8660220 its reverse (220668), we get a palindrome (8880888).

It can be divided in two parts, 86 and 60220, that added together give a palindrome (60306).

The spelling of 8660220 in words is "eight million, six hundred sixty thousand, two hundred twenty".