8689220 has 12 divisors (see below), whose sum is σ = 18247404. Its totient is φ = 3475680.

The previous prime is 8689217. The next prime is 8689223. The reversal of 8689220 is 229868.

8689220 is digitally balanced in base 5, 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 (8689217) and next prime (8689223).

It can be written as a sum of positive squares in 2 ways, for example, as 2617924 + 6071296 = 1618^2 + 2464^2 .

It is not an unprimeable number, because it can be changed into a prime (8689223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217211 + ... + 217250.

It is an arithmetic number, because the mean of its divisors is an integer number (1520617).

Almost surely, 2^8689220 is an apocalyptic number.

It is an amenable number.

8689220 is an abundant number, since it is smaller than the sum of its proper divisors (9558184).

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

8689220 is a wasteful number, since it uses less digits than its factorization.

8689220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434470 (or 434468 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 8689220 is about 2947.7482931892. The cubic root of 8689220 is about 205.5860288669.

The spelling of 8689220 in words is "eight million, six hundred eighty-nine thousand, two hundred twenty".