855888684 has 72 divisors (see below), whose sum is σ = 2377222848. Its totient is φ = 238845600.

The previous prime is 855888643. The next prime is 855888689. The reversal of 855888684 is 486888558.

It is not an unprimeable number, because it can be changed into a prime (855888689) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8359 + ... + 42209.

It is an arithmetic number, because the mean of its divisors is an integer number (33016984).

Almost surely, 2^855888684 is an apocalyptic number.

855888684 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 855888684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1188611424).

855888684 is an abundant number, since it is smaller than the sum of its proper divisors (1521334164).

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

855888684 is a wasteful number, since it uses less digits than its factorization.

855888684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33915 (or 33906 counting only the distinct ones).

The product of its digits is 19660800, while the sum is 60.

The square root of 855888684 is about 29255.5752635288. The cubic root of 855888684 is about 949.4507199617.

The spelling of 855888684 in words is "eight hundred fifty-five million, eight hundred eighty-eight thousand, six hundred eighty-four".