63671317 has 2 divisors, whose sum is σ = 63671318. Its totient is φ = 63671316.

The previous prime is 63671287. The next prime is 63671329. The reversal of 63671317 is 71317636.

It is a happy number.

63671317 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., 53597041 + 10074276 = 7321^2 + 3174^2 .

It is a cyclic number.

It is not a de Polignac number, because 63671317 - 2⁷ = 63671189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63671357) 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, 31835658 + 31835659.

It is an arithmetic number, because the mean of its divisors is an integer number (31835659).

Almost surely, 2^63671317 is an apocalyptic number.

It is an amenable number.

63671317 is a deficient number, since it is larger than the sum of its proper divisors (1).

63671317 is an equidigital number, since it uses as much as digits as its factorization.

63671317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15876, while the sum is 34.

The square root of 63671317 is about 7979.4308694292. The cubic root of 63671317 is about 399.3140681662.

The spelling of 63671317 in words is "sixty-three million, six hundred seventy-one thousand, three hundred seventeen".