8613167220 has 144 divisors (see below), whose sum is σ = 29935196928. Its totient is φ = 1963699200.

The previous prime is 8613167197. The next prime is 8613167257. The reversal of 8613167220 is 227613168.

8613167220 is a `hidden beast` number, since 8 + 613 + 16 + 7 + 2 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 496737 + ... + 513783.

It is an arithmetic number, because the mean of its divisors is an integer number (207883312).

Almost surely, 2^8613167220 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 8613167220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14967598464).

8613167220 is an abundant number, since it is smaller than the sum of its proper divisors (21322029708).

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

8613167220 is a wasteful number, since it uses less digits than its factorization.

8613167220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17470 (or 17465 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 8613167220 is about 92807.1506943296. The cubic root of 8613167220 is about 2049.8447013032.

It can be divided in two parts, 86131 and 67220, that added together give a palindrome (153351).

The spelling of 8613167220 in words is "eight billion, six hundred thirteen million, one hundred sixty-seven thousand, two hundred twenty".