63648131 has 2 divisors, whose sum is σ = 63648132. Its totient is φ = 63648130.

The previous prime is 63648073. The next prime is 63648149. The reversal of 63648131 is 13184636.

63648131 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 63648131 - 2¹⁰ = 63647107 is a prime.

It is a super-2 number, since 2×63648131² = 8102169159586322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (63648331) 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, 31824065 + 31824066.

It is an arithmetic number, because the mean of its divisors is an integer number (31824066).

Almost surely, 2^63648131 is an apocalyptic number.

63648131 is a deficient number, since it is larger than the sum of its proper divisors (1).

63648131 is an equidigital number, since it uses as much as digits as its factorization.

63648131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 32.

The square root of 63648131 is about 7977.9778766301. The cubic root of 63648131 is about 399.2655920209.

The spelling of 63648131 in words is "sixty-three million, six hundred forty-eight thousand, one hundred thirty-one".