63946819 has 2 divisors, whose sum is σ = 63946820. Its totient is φ = 63946818.

The previous prime is 63946793. The next prime is 63946823. The reversal of 63946819 is 91864936.

63946819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63946819 - 2²³ = 55558211 is a prime.

It is a super-2 number, since 2×63946819² = 8178391320437522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (63946879) 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, 31973409 + 31973410.

It is an arithmetic number, because the mean of its divisors is an integer number (31973410).

Almost surely, 2^63946819 is an apocalyptic number.

63946819 is a deficient number, since it is larger than the sum of its proper divisors (1).

63946819 is an equidigital number, since it uses as much as digits as its factorization.

63946819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 46.

The square root of 63946819 is about 7996.6754967299. The cubic root of 63946819 is about 399.8891755477.

The spelling of 63946819 in words is "sixty-three million, nine hundred forty-six thousand, eight hundred nineteen".