800120705 has 8 divisors (see below), whose sum is σ = 961391592. Its totient is φ = 639265408.

The previous prime is 800120683. The next prime is 800120729. The reversal of 800120705 is 507021008.

It can be written as a sum of positive squares in 4 ways, for example, as 7360369 + 792760336 = 2713^2 + 28156^2 .

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 800120705 - 2²⁴ = 783343489 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 99644 + ... + 107373.

It is an arithmetic number, because the mean of its divisors is an integer number (120173949).

Almost surely, 2^800120705 is an apocalyptic number.

It is an amenable number.

800120705 is a deficient number, since it is larger than the sum of its proper divisors (161270887).

800120705 is a wasteful number, since it uses less digits than its factorization.

800120705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207795.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 800120705 is about 28286.4049500816. The cubic root of 800120705 is about 928.3644529563.

The spelling of 800120705 in words is "eight hundred million, one hundred twenty thousand, seven hundred five".