889598640 has 320 divisors, whose sum is σ = 3275790336. Its totient is φ = 195526656.

The previous prime is 889598617. The next prime is 889598641. The reversal of 889598640 is 46895988.

It is not an unprimeable number, because it can be changed into a prime (889598641) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8636829 + ... + 8636931.

Almost surely, 2^889598640 is an apocalyptic number.

889598640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 889598640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1637895168).

889598640 is an abundant number, since it is smaller than the sum of its proper divisors (2386191696).

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

889598640 is a wasteful number, since it uses less digits than its factorization.

889598640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276 (or 270 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 57.

The square root of 889598640 is about 29826.1402129072. The cubic root of 889598640 is about 961.7555550152.

The spelling of 889598640 in words is "eight hundred eighty-nine million, five hundred ninety-eight thousand, six hundred forty".