851660768 has 96 divisors (see below), whose sum is σ = 2019225600. Its totient is φ = 353082240.

The previous prime is 851660743. The next prime is 851660779. The reversal of 851660768 is 867066158.

851660768 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 15 ways as a sum of consecutive naturals, for example, 339005 + ... + 341507.

It is an arithmetic number, because the mean of its divisors is an integer number (21033600).

Almost surely, 2^851660768 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 851660768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1009612800).

851660768 is an abundant number, since it is smaller than the sum of its proper divisors (1167564832).

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

851660768 is a wasteful number, since it uses less digits than its factorization.

851660768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2565 (or 2543 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 851660768 is about 29183.2275117061. The cubic root of 851660768 is about 947.8847741643.

The spelling of 851660768 in words is "eight hundred fifty-one million, six hundred sixty thousand, seven hundred sixty-eight".