806136856 has 64 divisors (see below), whose sum is σ = 1786982400. Its totient is φ = 333770112.

The previous prime is 806136839. The next prime is 806136869. The reversal of 806136856 is 658631608.

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, 205990 + ... + 209866.

It is an arithmetic number, because the mean of its divisors is an integer number (27921600).

Almost surely, 2^806136856 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 806136856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (893491200).

806136856 is an abundant number, since it is smaller than the sum of its proper divisors (980845544).

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

806136856 is a wasteful number, since it uses less digits than its factorization.

806136856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4016 (or 4012 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 806136856 is about 28392.5493043510. The cubic root of 806136856 is about 930.6854529650.

The spelling of 806136856 in words is "eight hundred six million, one hundred thirty-six thousand, eight hundred fifty-six".