63661327 has 2 divisors, whose sum is σ = 63661328. Its totient is φ = 63661326.

The previous prime is 63661319. The next prime is 63661331. The reversal of 63661327 is 72316636.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63661327 - 2³ = 63661319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63661292 and 63661301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63661307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31830663 + 31830664.

It is an arithmetic number, because the mean of its divisors is an integer number (31830664).

Almost surely, 2^63661327 is an apocalyptic number.

63661327 is a deficient number, since it is larger than the sum of its proper divisors (1).

63661327 is an equidigital number, since it uses as much as digits as its factorization.

63661327 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 34.

The square root of 63661327 is about 7978.8048603785. The cubic root of 63661327 is about 399.2931830100.

The spelling of 63661327 in words is "sixty-three million, six hundred sixty-one thousand, three hundred twenty-seven".