655869888 has 84 divisors (see below), whose sum is σ = 1886564680. Its totient is φ = 217852416.

The previous prime is 655869853. The next prime is 655869899. The reversal of 655869888 is 888968556.

655869888 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 174978 + ... + 178686.

Almost surely, 2^655869888 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 655869888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (943282340).

655869888 is an abundant number, since it is smaller than the sum of its proper divisors (1230694792).

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

655869888 is a wasteful number, since it uses less digits than its factorization.

655869888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4034 (or 4021 counting only the distinct ones).

The product of its digits is 33177600, while the sum is 63.

The square root of 655869888 is about 25609.9568137082. The cubic root of 655869888 is about 868.8388473009.

The spelling of 655869888 in words is "six hundred fifty-five million, eight hundred sixty-nine thousand, eight hundred eighty-eight".