63564961 has 2 divisors, whose sum is σ = 63564962. Its totient is φ = 63564960.

The previous prime is 63564953. The next prime is 63564971. The reversal of 63564961 is 16946536.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58614336 + 4950625 = 7656^2 + 2225^2 .

It is a cyclic number.

It is not a de Polignac number, because 63564961 - 2³ = 63564953 is a prime.

It is not a weakly prime, because it can be changed into another prime (63564931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31782480 + 31782481.

It is an arithmetic number, because the mean of its divisors is an integer number (31782481).

Almost surely, 2^63564961 is an apocalyptic number.

It is an amenable number.

63564961 is a deficient number, since it is larger than the sum of its proper divisors (1).

63564961 is an equidigital number, since it uses as much as digits as its factorization.

63564961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 40.

The square root of 63564961 is about 7972.7636989942. The cubic root of 63564961 is about 399.0916073687.

The spelling of 63564961 in words is "sixty-three million, five hundred sixty-four thousand, nine hundred sixty-one".