800668045 has 4 divisors (see below), whose sum is σ = 960801660. Its totient is φ = 640534432.

The previous prime is 800668021. The next prime is 800668061. The reversal of 800668045 is 540866008.

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

It can be written as a sum of positive squares in 2 ways, for example, as 198161929 + 602506116 = 14077^2 + 24546^2 .

It is a cyclic number.

It is not a de Polignac number, because 800668045 - 2⁵ = 800668013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 800667995 and 800668013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80066800 + ... + 80066809.

It is an arithmetic number, because the mean of its divisors is an integer number (240200415).

Almost surely, 2^800668045 is an apocalyptic number.

It is an amenable number.

800668045 is a deficient number, since it is larger than the sum of its proper divisors (160133615).

800668045 is a wasteful number, since it uses less digits than its factorization.

800668045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160133614.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 800668045 is about 28296.0782618369. The cubic root of 800668045 is about 928.5760940143.

The spelling of 800668045 in words is "eight hundred million, six hundred sixty-eight thousand, forty-five".