894664663 has 4 divisors (see below), whose sum is σ = 901195200. Its totient is φ = 888134128.

The previous prime is 894664643. The next prime is 894664669. The reversal of 894664663 is 366466498.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-894664663 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 894664663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (894664669) 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, 3265063 + ... + 3265336.

It is an arithmetic number, because the mean of its divisors is an integer number (225298800).

Almost surely, 2^894664663 is an apocalyptic number.

894664663 is a deficient number, since it is larger than the sum of its proper divisors (6530537).

894664663 is a wasteful number, since it uses less digits than its factorization.

894664663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6530536.

The product of its digits is 4478976, while the sum is 52.

The square root of 894664663 is about 29910.9455383811. The cubic root of 894664663 is about 963.5777461062.

The spelling of 894664663 in words is "eight hundred ninety-four million, six hundred sixty-four thousand, six hundred sixty-three".