888778660 has 144 divisors (see below), whose sum is σ = 2451072960. Its totient is φ = 267375360.

The previous prime is 888778619. The next prime is 888778663. The reversal of 888778660 is 66877888.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a junction number, because it is equal to n+sod(n) for n = 888778595 and 888778604.

It is not an unprimeable number, because it can be changed into a prime (888778663) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 311199 + ... + 314041.

It is an arithmetic number, because the mean of its divisors is an integer number (17021340).

Almost surely, 2^888778660 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 888778660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1225536480).

888778660 is an abundant number, since it is smaller than the sum of its proper divisors (1562294300).

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

888778660 is a wasteful number, since it uses less digits than its factorization.

888778660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2906 (or 2897 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 58.

The square root of 888778660 is about 29812.3910480189. The cubic root of 888778660 is about 961.4599675034.

The spelling of 888778660 in words is "eight hundred eighty-eight million, seven hundred seventy-eight thousand, six hundred sixty".