63906907 has 2 divisors, whose sum is σ = 63906908. Its totient is φ = 63906906.

The previous prime is 63906863. The next prime is 63906911. The reversal of 63906907 is 70960936.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63906907 - 2¹¹ = 63904859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63906907.

It is not a weakly prime, because it can be changed into another prime (63906917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31953453 + 31953454.

It is an arithmetic number, because the mean of its divisors is an integer number (31953454).

Almost surely, 2^63906907 is an apocalyptic number.

63906907 is a deficient number, since it is larger than the sum of its proper divisors (1).

63906907 is an equidigital number, since it uses as much as digits as its factorization.

63906907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61236, while the sum is 40.

The square root of 63906907 is about 7994.1795701623. The cubic root of 63906907 is about 399.8059621385.

The spelling of 63906907 in words is "sixty-three million, nine hundred six thousand, nine hundred seven".