63390247 has 2 divisors, whose sum is σ = 63390248. Its totient is φ = 63390246.

The previous prime is 63390221. The next prime is 63390293. The reversal of 63390247 is 74209336.

63390247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63390247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63390347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31695123 + 31695124.

It is an arithmetic number, because the mean of its divisors is an integer number (31695124).

Almost surely, 2^63390247 is an apocalyptic number.

63390247 is a deficient number, since it is larger than the sum of its proper divisors (1).

63390247 is an equidigital number, since it uses as much as digits as its factorization.

63390247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 34.

The square root of 63390247 is about 7961.7992313296. The cubic root of 63390247 is about 398.7256254857.

The spelling of 63390247 in words is "sixty-three million, three hundred ninety thousand, two hundred forty-seven".