63887563 has 2 divisors, whose sum is σ = 63887564. Its totient is φ = 63887562.

The previous prime is 63887531. The next prime is 63887569. The reversal of 63887563 is 36578836.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63887563 - 2⁵ = 63887531 is a prime.

It is not a weakly prime, because it can be changed into another prime (63887569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31943781 + 31943782.

It is an arithmetic number, because the mean of its divisors is an integer number (31943782).

Almost surely, 2^63887563 is an apocalyptic number.

63887563 is a deficient number, since it is larger than the sum of its proper divisors (1).

63887563 is an equidigital number, since it uses as much as digits as its factorization.

63887563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 46.

The square root of 63887563 is about 7992.9695983408. The cubic root of 63887563 is about 399.7656189406.

The spelling of 63887563 in words is "sixty-three million, eight hundred eighty-seven thousand, five hundred sixty-three".