5663993 has 2 divisors, whose sum is σ = 5663994. Its totient is φ = 5663992.

The previous prime is 5663989. The next prime is 5664011. The reversal of 5663993 is 3993665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2948089 + 2715904 = 1717^2 + 1648^2 .

It is a cyclic number.

It is not a de Polignac number, because 5663993 - 2² = 5663989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5663993.

It is not a weakly prime, because it can be changed into another prime (5663953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2831996 + 2831997.

It is an arithmetic number, because the mean of its divisors is an integer number (2831997).

Almost surely, 2^5663993 is an apocalyptic number.

It is an amenable number.

5663993 is a deficient number, since it is larger than the sum of its proper divisors (1).

5663993 is an equidigital number, since it uses as much as digits as its factorization.

5663993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 131220, while the sum is 41.

The square root of 5663993 is about 2379.9144942623. The cubic root of 5663993 is about 178.2546643048.

The spelling of 5663993 in words is "five million, six hundred sixty-three thousand, nine hundred ninety-three".