63940307 has 2 divisors, whose sum is σ = 63940308. Its totient is φ = 63940306.

The previous prime is 63940271. The next prime is 63940333. The reversal of 63940307 is 70304936.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63940307 - 2⁶ = 63940243 is a prime.

It is not a weakly prime, because it can be changed into another prime (63940397) 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, 31970153 + 31970154.

It is an arithmetic number, because the mean of its divisors is an integer number (31970154).

Almost surely, 2^63940307 is an apocalyptic number.

63940307 is a deficient number, since it is larger than the sum of its proper divisors (1).

63940307 is an equidigital number, since it uses as much as digits as its factorization.

63940307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 63940307 is about 7996.2683171589. The cubic root of 63940307 is about 399.8756008995.

The spelling of 63940307 in words is "sixty-three million, nine hundred forty thousand, three hundred seven".