8630820 has 96 divisors (see below), whose sum is σ = 29312640. Its totient is φ = 2090880.

The previous prime is 8630813. The next prime is 8630821. The reversal of 8630820 is 280368.

8630820 is a `hidden beast` number, since 8 + 630 + 8 + 20 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (8630821) 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, 5214 + ... + 6666.

It is an arithmetic number, because the mean of its divisors is an integer number (305340).

Almost surely, 2^8630820 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 8630820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14656320).

8630820 is an abundant number, since it is smaller than the sum of its proper divisors (20681820).

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

8630820 is a wasteful number, since it uses less digits than its factorization.

8630820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482 (or 1474 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 8630820 is about 2937.8257266216. The cubic root of 8630820 is about 205.1244138696.

The spelling of 8630820 in words is "eight million, six hundred thirty thousand, eight hundred twenty".