63998027 has 2 divisors, whose sum is σ = 63998028. Its totient is φ = 63998026.

The previous prime is 63998009. The next prime is 63998069. The reversal of 63998027 is 72089936.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63998027 - 2¹⁸ = 63735883 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (63998087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31999013 + 31999014.

It is an arithmetic number, because the mean of its divisors is an integer number (31999014).

Almost surely, 2^63998027 is an apocalyptic number.

63998027 is a deficient number, since it is larger than the sum of its proper divisors (1).

63998027 is an equidigital number, since it uses as much as digits as its factorization.

63998027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 63998027 is about 7999.8766865496. The cubic root of 63998027 is about 399.9958895411.

The spelling of 63998027 in words is "sixty-three million, nine hundred ninety-eight thousand, twenty-seven".