63959911 has 2 divisors, whose sum is σ = 63959912. Its totient is φ = 63959910.

The previous prime is 63959891. The next prime is 63959977. The reversal of 63959911 is 11995936.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63959911 - 2⁵ = 63959879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63954911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31979955 + 31979956.

It is an arithmetic number, because the mean of its divisors is an integer number (31979956).

Almost surely, 2^63959911 is an apocalyptic number.

63959911 is a deficient number, since it is larger than the sum of its proper divisors (1).

63959911 is an equidigital number, since it uses as much as digits as its factorization.

63959911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 65610, while the sum is 43.

The square root of 63959911 is about 7997.4940450118. The cubic root of 63959911 is about 399.9164638055.

The spelling of 63959911 in words is "sixty-three million, nine hundred fifty-nine thousand, nine hundred eleven".