855816768 has 42 divisors (see below), whose sum is σ = 2453045894. Its totient is φ = 285272064.

The previous prime is 855816761. The next prime is 855816769. The reversal of 855816768 is 867618558.

855816768 is a `hidden beast` number, since 8 + 558 + 16 + 76 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 784448064 + 71368704 = 28008^2 + 8448^2 .

It is a super-3 number, since 3×855816768³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (855816761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 742321 + ... + 743472.

Almost surely, 2^855816768 is an apocalyptic number.

It is an amenable number.

855816768 is an abundant number, since it is smaller than the sum of its proper divisors (1597229126).

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

855816768 is a wasteful number, since it uses less digits than its factorization.

855816768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1485811 (or 1485798 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 54.

The square root of 855816768 is about 29254.3461386509. The cubic root of 855816768 is about 949.4241267019.

The spelling of 855816768 in words is "eight hundred fifty-five million, eight hundred sixteen thousand, seven hundred sixty-eight".