805168066 has 16 divisors (see below), whose sum is σ = 1213525440. Its totient is φ = 400664880.

The previous prime is 805168057. The next prime is 805168069. The reversal of 805168066 is 660861508.

It is a happy number.

It is a super-2 number, since 2×805168066² = 1296591229012360712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (805168069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 500235 + ... + 501841.

It is an arithmetic number, because the mean of its divisors is an integer number (75845340).

Almost surely, 2^805168066 is an apocalyptic number.

805168066 is a deficient number, since it is larger than the sum of its proper divisors (408357374).

805168066 is a wasteful number, since it uses less digits than its factorization.

805168066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2649.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 805168066 is about 28375.4835377302. The cubic root of 805168066 is about 930.3124806499.

The spelling of 805168066 in words is "eight hundred five million, one hundred sixty-eight thousand, sixty-six".