889555620 has 96 divisors (see below), whose sum is σ = 2564698752. Its totient is φ = 230243328.

The previous prime is 889555607. The next prime is 889555637. The reversal of 889555620 is 26555988.

It is a self number, because there is not a number n which added to its sum of digits gives 889555620.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 445344 + ... + 447336.

It is an arithmetic number, because the mean of its divisors is an integer number (26715612).

Almost surely, 2^889555620 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 889555620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1282349376).

889555620 is an abundant number, since it is smaller than the sum of its proper divisors (1675143132).

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

889555620 is a wasteful number, since it uses less digits than its factorization.

889555620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2221 (or 2219 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 48.

The square root of 889555620 is about 29825.4190247178. The cubic root of 889555620 is about 961.7400516226.

The spelling of 889555620 in words is "eight hundred eighty-nine million, five hundred fifty-five thousand, six hundred twenty".