63546661 has 2 divisors, whose sum is σ = 63546662. Its totient is φ = 63546660.

The previous prime is 63546641. The next prime is 63546667. The reversal of 63546661 is 16664536.

63546661 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 can be written as a sum of positive squares in only one way, i.e., 48916036 + 14630625 = 6994^2 + 3825^2 .

It is a cyclic number.

It is not a de Polignac number, because 63546661 - 2²⁵ = 29992229 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63546661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63546667) 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, 31773330 + 31773331.

It is an arithmetic number, because the mean of its divisors is an integer number (31773331).

Almost surely, 2^63546661 is an apocalyptic number.

It is an amenable number.

63546661 is a deficient number, since it is larger than the sum of its proper divisors (1).

63546661 is an equidigital number, since it uses as much as digits as its factorization.

63546661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 37.

The square root of 63546661 is about 7971.6159591390. The cubic root of 63546661 is about 399.0533049388.

The spelling of 63546661 in words is "sixty-three million, five hundred forty-six thousand, six hundred sixty-one".