805218216 has 48 divisors (see below), whose sum is σ = 2212694400. Its totient is φ = 244004640.

The previous prime is 805218199. The next prime is 805218223. The reversal of 805218216 is 612812508.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135736 + ... + 141543.

It is an arithmetic number, because the mean of its divisors is an integer number (46097800).

Almost surely, 2^805218216 is an apocalyptic number.

It is an amenable number.

805218216 is an abundant number, since it is smaller than the sum of its proper divisors (1407476184).

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

805218216 is a wasteful number, since it uses less digits than its factorization.

805218216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277310 (or 277295 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 805218216 is about 28376.3672093522. The cubic root of 805218216 is about 930.3317951277.

The spelling of 805218216 in words is "eight hundred five million, two hundred eighteen thousand, two hundred sixteen".