8722620 has 96 divisors (see below), whose sum is σ = 28123200. Its totient is φ = 2241792.

The previous prime is 8722613. The next prime is 8722621. The reversal of 8722620 is 262278.

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 (8722621) 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, 15382 + ... + 15938.

It is an arithmetic number, because the mean of its divisors is an integer number (292950).

Almost surely, 2^8722620 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 8722620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14061600).

8722620 is an abundant number, since it is smaller than the sum of its proper divisors (19400580).

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

8722620 is a wasteful number, since it uses less digits than its factorization.

8722620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604 (or 596 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 8722620 is about 2953.4082007064. The cubic root of 8722620 is about 205.8491055716.

Adding to 8722620 its reverse (262278), we get a palindrome (8984898).

The spelling of 8722620 in words is "eight million, seven hundred twenty-two thousand, six hundred twenty".