806105923 has 4 divisors (see below), whose sum is σ = 921263920. Its totient is φ = 690947928.

The previous prime is 806105921. The next prime is 806105933. The reversal of 806105923 is 329501608.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 806105923 - 2¹ = 806105921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (806105921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57578988 + ... + 57579001.

It is an arithmetic number, because the mean of its divisors is an integer number (230315980).

Almost surely, 2^806105923 is an apocalyptic number.

806105923 is a deficient number, since it is larger than the sum of its proper divisors (115157997).

806105923 is a wasteful number, since it uses less digits than its factorization.

806105923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115157996.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 806105923 is about 28392.0045611436. The cubic root of 806105923 is about 930.6735487574.

The spelling of 806105923 in words is "eight hundred six million, one hundred five thousand, nine hundred twenty-three".