8687220 has 48 divisors (see below), whose sum is σ = 24698688. Its totient is φ = 2280960.

The previous prime is 8687213. The next prime is 8687227. The reversal of 8687220 is 227868.

8687220 = T₂₉₁ + T₂₉₂ + ... + T₄₂₄.

It is an interprime number because it is at equal distance from previous prime (8687213) and next prime (8687227).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8687227) 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, 2940 + ... + 5100.

It is an arithmetic number, because the mean of its divisors is an integer number (514556).

Almost surely, 2^8687220 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 8687220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12349344).

8687220 is an abundant number, since it is smaller than the sum of its proper divisors (16011468).

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

8687220 is a wasteful number, since it uses less digits than its factorization.

8687220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2240 (or 2238 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 8687220 is about 2947.4090316751. The cubic root of 8687220 is about 205.5702543935.

The spelling of 8687220 in words is "eight million, six hundred eighty-seven thousand, two hundred twenty".