889817656 has 96 divisors (see below), whose sum is σ = 2100878640. Its totient is φ = 350203392.

The previous prime is 889817651. The next prime is 889817657. The reversal of 889817656 is 656718988.

It is a self number, because there is not a number n which added to its sum of digits gives 889817656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (889817651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1441860 + ... + 1442476.

Almost surely, 2^889817656 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 889817656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1050439320).

889817656 is an abundant number, since it is smaller than the sum of its proper divisors (1211060984).

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

889817656 is a wasteful number, since it uses less digits than its factorization.

889817656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933 (or 922 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 58.

The square root of 889817656 is about 29829.8115314194. The cubic root of 889817656 is about 961.8344754636.

The spelling of 889817656 in words is "eight hundred eighty-nine million, eight hundred seventeen thousand, six hundred fifty-six".