63940267 has 2 divisors, whose sum is σ = 63940268. Its totient is φ = 63940266.

The previous prime is 63940243. The next prime is 63940271. The reversal of 63940267 is 76204936.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63940267 - 2¹¹ = 63938219 is a prime.

It is equal to p_3781774 and since 63940267 and 3781774 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (63940067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31970133 + 31970134.

It is an arithmetic number, because the mean of its divisors is an integer number (31970134).

Almost surely, 2^63940267 is an apocalyptic number.

63940267 is a deficient number, since it is larger than the sum of its proper divisors (1).

63940267 is an equidigital number, since it uses as much as digits as its factorization.

63940267 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 63940267 is about 7996.2658159919. The cubic root of 63940267 is about 399.8755175143.

The spelling of 63940267 in words is "sixty-three million, nine hundred forty thousand, two hundred sixty-seven".