63994163 has 2 divisors, whose sum is σ = 63994164. Its totient is φ = 63994162.

The previous prime is 63994141. The next prime is 63994169. The reversal of 63994163 is 36149936.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63994163 - 2¹² = 63990067 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63994163.

It is not a weakly prime, because it can be changed into another prime (63994169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31997081 + 31997082.

It is an arithmetic number, because the mean of its divisors is an integer number (31997082).

Almost surely, 2^63994163 is an apocalyptic number.

63994163 is a deficient number, since it is larger than the sum of its proper divisors (1).

63994163 is an equidigital number, since it uses as much as digits as its factorization.

63994163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 104976, while the sum is 41.

The square root of 63994163 is about 7999.6351791816. The cubic root of 63994163 is about 399.9878392136.

The spelling of 63994163 in words is "sixty-three million, nine hundred ninety-four thousand, one hundred sixty-three".