63395561 has 2 divisors, whose sum is σ = 63395562. Its totient is φ = 63395560.

The previous prime is 63395557. The next prime is 63395603. The reversal of 63395561 is 16559336.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37589161 + 25806400 = 6131^2 + 5080^2 .

It is a cyclic number.

It is not a de Polignac number, because 63395561 - 2² = 63395557 is a prime.

It is not a weakly prime, because it can be changed into another prime (63395461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31697780 + 31697781.

It is an arithmetic number, because the mean of its divisors is an integer number (31697781).

Almost surely, 2^63395561 is an apocalyptic number.

It is an amenable number.

63395561 is a deficient number, since it is larger than the sum of its proper divisors (1).

63395561 is an equidigital number, since it uses as much as digits as its factorization.

63395561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72900, while the sum is 38.

The square root of 63395561 is about 7962.1329428740. The cubic root of 63395561 is about 398.7367668882.

The spelling of 63395561 in words is "sixty-three million, three hundred ninety-five thousand, five hundred sixty-one".