899655120 has 640 divisors, whose sum is σ = 3999744000. Its totient is φ = 180652032.

The previous prime is 899655109. The next prime is 899655151. The reversal of 899655120 is 21556998.

899655120 is a `hidden beast` number, since 8 + 9 + 96 + 551 + 2 + 0 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4520781 + ... + 4520979.

It is an arithmetic number, because the mean of its divisors is an integer number (6249600).

Almost surely, 2^899655120 is an apocalyptic number.

899655120 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 899655120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1999872000).

899655120 is an abundant number, since it is smaller than the sum of its proper divisors (3100088880).

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

899655120 is a wasteful number, since it uses less digits than its factorization.

899655120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 45.

The square root of 899655120 is about 29994.2514492361. The cubic root of 899655120 is about 965.3660436721.

The spelling of 899655120 in words is "eight hundred ninety-nine million, six hundred fifty-five thousand, one hundred twenty".