855638016 has 100 divisors (see below), whose sum is σ = 2415919032. Its totient is φ = 268435456.

The previous prime is 855637957. The next prime is 855638023. The reversal of 855638016 is 610836558.

It is a nialpdrome in base 8 and base 16.

It is a zygodrome in base 2 and base 16.

It is an unprimeable number.

In principle, a polygon with 855638016 sides can be constructed with ruler and compass.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50331640 + ... + 50331656.

Almost surely, 2^855638016 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 855638016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1207959516).

855638016 is an abundant number, since it is smaller than the sum of its proper divisors (1560281016).

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

855638016 is an frugal number, since it uses more digits than its factorization.

855638016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68 (or 22 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 855638016 is about 29251.2908433115. The cubic root of 855638016 is about 949.3580209321.

The spelling of 855638016 in words is "eight hundred fifty-five million, six hundred thirty-eight thousand, sixteen".