800043645 has 8 divisors (see below), whose sum is σ = 1280069856. Its totient is φ = 426689936.

The previous prime is 800043641. The next prime is 800043653. The reversal of 800043645 is 546340008.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 800043645 - 2² = 800043641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800043641) 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, 26668107 + ... + 26668136.

It is an arithmetic number, because the mean of its divisors is an integer number (160008732).

Almost surely, 2^800043645 is an apocalyptic number.

It is an amenable number.

800043645 is a deficient number, since it is larger than the sum of its proper divisors (480026211).

800043645 is a wasteful number, since it uses less digits than its factorization.

800043645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53336251.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 800043645 is about 28285.0427788257. The cubic root of 800043645 is about 928.3346482609.

The spelling of 800043645 in words is "eight hundred million, forty-three thousand, six hundred forty-five".