63551863 has 2 divisors, whose sum is σ = 63551864. Its totient is φ = 63551862.

The previous prime is 63551861. The next prime is 63551867. The reversal of 63551863 is 36815536.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63551863 - 2¹ = 63551861 is a prime.

Together with 63551861, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63551861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31775931 + 31775932.

It is an arithmetic number, because the mean of its divisors is an integer number (31775932).

Almost surely, 2^63551863 is an apocalyptic number.

63551863 is a deficient number, since it is larger than the sum of its proper divisors (1).

63551863 is an equidigital number, since it uses as much as digits as its factorization.

63551863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 37.

The square root of 63551863 is about 7971.9422351144. The cubic root of 63551863 is about 399.0641936234.

The spelling of 63551863 in words is "sixty-three million, five hundred fifty-one thousand, eight hundred sixty-three".