800006813761 has 3 divisors (see below), whose sum is σ = 800007708193. Its totient is φ = 800005919330.

The previous prime is 800006813707. The next prime is 800006813783. The reversal of 800006813761 is 167318600008.

The square root of 800006813761 is 894431.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a de Polignac number, because none of the positive numbers 2^k-800006813761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (800006813261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 447216 + ... + 1341646.

Almost surely, 2^800006813761 is an apocalyptic number.

800006813761 is the 894431-st square number.

800006813761 is the 447216-th centered octagonal number.

It is an amenable number.

800006813761 is a deficient number, since it is larger than the sum of its proper divisors (894432).

800006813761 is an frugal number, since it uses more digits than its factorization.

800006813761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1788862 (or 894431 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The spelling of 800006813761 in words is "eight hundred billion, six million, eight hundred thirteen thousand, seven hundred sixty-one".