8990620 has 48 divisors (see below), whose sum is σ = 20659968. Its totient is φ = 3271680.

The previous prime is 8990617. The next prime is 8990623. The reversal of 8990620 is 260998.

8990620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (8990617) and next prime (8990623).

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8990623) 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, 10114 + ... + 10966.

It is an arithmetic number, because the mean of its divisors is an integer number (430416).

Almost surely, 2^8990620 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 8990620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10329984).

8990620 is an abundant number, since it is smaller than the sum of its proper divisors (11669348).

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

8990620 is a wasteful number, since it uses less digits than its factorization.

8990620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910 (or 908 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 8990620 is about 2998.4362591191. The cubic root of 8990620 is about 207.9360935329.

It can be divided in two parts, 89 and 90620, that added together give a palindrome (90709).

The spelling of 8990620 in words is "eight million, nine hundred ninety thousand, six hundred twenty".