805688406 has 12 divisors (see below), whose sum is σ = 1745658252. Its totient is φ = 268562796.

The previous prime is 805688399. The next prime is 805688441. The reversal of 805688406 is 604886508.

805688406 is a `hidden beast` number, since 8 + 0 + 568 + 84 + 0 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22380216 + ... + 22380251.

It is an arithmetic number, because the mean of its divisors is an integer number (145471521).

Almost surely, 2^805688406 is an apocalyptic number.

805688406 is an abundant number, since it is smaller than the sum of its proper divisors (939969846).

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

805688406 is a wasteful number, since it uses less digits than its factorization.

805688406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44760475 (or 44760472 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The square root of 805688406 is about 28384.6508874074. The cubic root of 805688406 is about 930.5128423613.

The spelling of 805688406 in words is "eight hundred five million, six hundred eighty-eight thousand, four hundred six".