855168804 has 72 divisors (see below), whose sum is σ = 2479608768. Its totient is φ = 243432000.

The previous prime is 855168763. The next prime is 855168859. The reversal of 855168804 is 408861558.

It is a self number, because there is not a number n which added to its sum of digits gives 855168804.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63679 + ... + 75929.

Almost surely, 2^855168804 is an apocalyptic number.

855168804 is a gapful number since it is divisible by the number (84) 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 855168804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1239804384).

855168804 is an abundant number, since it is smaller than the sum of its proper divisors (1624439964).

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

855168804 is a wasteful number, since it uses less digits than its factorization.

855168804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12545 (or 12540 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 45.

The square root of 855168804 is about 29243.2693794658. The cubic root of 855168804 is about 949.1844539108.

The spelling of 855168804 in words is "eight hundred fifty-five million, one hundred sixty-eight thousand, eight hundred four".