8629720 has 48 divisors (see below), whose sum is σ = 21354480. Its totient is φ = 3136320.

The previous prime is 8629711. The next prime is 8629739. The reversal of 8629720 is 279268.

8629720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3949 + ... + 5731.

It is an arithmetic number, because the mean of its divisors is an integer number (444885).

Almost surely, 2^8629720 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 8629720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10677240).

8629720 is an abundant number, since it is smaller than the sum of its proper divisors (12724760).

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

8629720 is a wasteful number, since it uses less digits than its factorization.

8629720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1816 (or 1801 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 8629720 is about 2937.6385073729. The cubic root of 8629720 is about 205.1156991147.

The spelling of 8629720 in words is "eight million, six hundred twenty-nine thousand, seven hundred twenty".