63438667 has 2 divisors, whose sum is σ = 63438668. Its totient is φ = 63438666.

The previous prime is 63438653. The next prime is 63438703. The reversal of 63438667 is 76683436.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63438667 - 2¹⁵ = 63405899 is a prime.

It is not a weakly prime, because it can be changed into another prime (63438607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31719333 + 31719334.

It is an arithmetic number, because the mean of its divisors is an integer number (31719334).

Almost surely, 2^63438667 is an apocalyptic number.

63438667 is a deficient number, since it is larger than the sum of its proper divisors (1).

63438667 is an equidigital number, since it uses as much as digits as its factorization.

63438667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 43.

The square root of 63438667 is about 7964.8394208546. The cubic root of 63438667 is about 398.8271204956.

The spelling of 63438667 in words is "sixty-three million, four hundred thirty-eight thousand, six hundred sixty-seven".