663650793 has 16 divisors (see below), whose sum is σ = 1058816640. Its totient is φ = 408400272.

The previous prime is 663650749. The next prime is 663650807. The reversal of 663650793 is 397056366.

663650793 is a `hidden beast` number, since 6 + 636 + 5 + 0 + 7 + 9 + 3 = 666.

663650793 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 663650793 - 2¹⁴ = 663634409 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (663650693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 945021 + ... + 945722.

It is an arithmetic number, because the mean of its divisors is an integer number (66176040).

Almost surely, 2^663650793 is an apocalyptic number.

It is an amenable number.

663650793 is a deficient number, since it is larger than the sum of its proper divisors (395165847).

663650793 is a wasteful number, since it uses less digits than its factorization.

663650793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1890765 (or 1890759 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 45.

The square root of 663650793 is about 25761.4206324108. The cubic root of 663650793 is about 872.2611691578.

The spelling of 663650793 in words is "six hundred sixty-three million, six hundred fifty thousand, seven hundred ninety-three".