63763891 has 2 divisors, whose sum is σ = 63763892. Its totient is φ = 63763890.

The previous prime is 63763879. The next prime is 63763907. The reversal of 63763891 is 19836736.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63763891 - 2⁵ = 63763859 is a prime.

It is not a weakly prime, because it can be changed into another prime (63763811) 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, 31881945 + 31881946.

It is an arithmetic number, because the mean of its divisors is an integer number (31881946).

Almost surely, 2^63763891 is an apocalyptic number.

63763891 is a deficient number, since it is larger than the sum of its proper divisors (1).

63763891 is an equidigital number, since it uses as much as digits as its factorization.

63763891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 43.

The square root of 63763891 is about 7985.2295521168. The cubic root of 63763891 is about 399.5075001085.

The spelling of 63763891 in words is "sixty-three million, seven hundred sixty-three thousand, eight hundred ninety-one".