814444663 has 4 divisors (see below), whose sum is σ = 815950648. Its totient is φ = 812938680.

The previous prime is 814444661. The next prime is 814444667. The reversal of 814444663 is 366444418.

814444663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 814444663 - 2¹ = 814444661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (814444661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 752181 + ... + 753262.

It is an arithmetic number, because the mean of its divisors is an integer number (203987662).

Almost surely, 2^814444663 is an apocalyptic number.

814444663 is a deficient number, since it is larger than the sum of its proper divisors (1505985).

814444663 is a wasteful number, since it uses less digits than its factorization.

814444663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505984.

The product of its digits is 221184, while the sum is 40.

The square root of 814444663 is about 28538.4768864773. The cubic root of 814444663 is about 933.8716551677.

The spelling of 814444663 in words is "eight hundred fourteen million, four hundred forty-four thousand, six hundred sixty-three".