800636745 has 16 divisors (see below), whose sum is σ = 1281851712. Its totient is φ = 426728640.

The previous prime is 800636717. The next prime is 800636861. The reversal of 800636745 is 547636008.

It is not a de Polignac number, because 800636745 - 2⁸ = 800636489 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7650 + ... + 40740.

It is an arithmetic number, because the mean of its divisors is an integer number (80115732).

Almost surely, 2^800636745 is an apocalyptic number.

It is an amenable number.

800636745 is a deficient number, since it is larger than the sum of its proper divisors (481214967).

800636745 is a wasteful number, since it uses less digits than its factorization.

800636745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34712.

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 800636745 is about 28295.5251762536. The cubic root of 800636745 is about 928.5639937810.

The spelling of 800636745 in words is "eight hundred million, six hundred thirty-six thousand, seven hundred forty-five".