8690220 has 288 divisors, whose sum is σ = 35750400. Its totient is φ = 1710720.

The previous prime is 8690203. The next prime is 8690221. The reversal of 8690220 is 220968.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8690221) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 457371 + ... + 457389.

Almost surely, 2^8690220 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 8690220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17875200).

8690220 is an abundant number, since it is smaller than the sum of its proper divisors (27060180).

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

8690220 is a wasteful number, since it uses less digits than its factorization.

8690220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66 (or 47 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 8690220 is about 2947.9179093048. The cubic root of 8690220 is about 205.5939151959.

The spelling of 8690220 in words is "eight million, six hundred ninety thousand, two hundred twenty".