663884113 has 2 divisors, whose sum is σ = 663884114. Its totient is φ = 663884112.

The previous prime is 663884101. The next prime is 663884129. The reversal of 663884113 is 311488366.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 596922624 + 66961489 = 24432^2 + 8183^2 .

It is a cyclic number.

It is not a de Polignac number, because 663884113 - 2¹³ = 663875921 is a prime.

It is not a weakly prime, because it can be changed into another prime (663884183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331942056 + 331942057.

It is an arithmetic number, because the mean of its divisors is an integer number (331942057).

Almost surely, 2^663884113 is an apocalyptic number.

It is an amenable number.

663884113 is a deficient number, since it is larger than the sum of its proper divisors (1).

663884113 is an equidigital number, since it uses as much as digits as its factorization.

663884113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 40.

The square root of 663884113 is about 25765.9487114292. The cubic root of 663884113 is about 872.3633775947.

The spelling of 663884113 in words is "six hundred sixty-three million, eight hundred eighty-four thousand, one hundred thirteen".