63889207 has 2 divisors, whose sum is σ = 63889208. Its totient is φ = 63889206.

The previous prime is 63889201. The next prime is 63889211. The reversal of 63889207 is 70298836.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63889207 - 2⁷ = 63889079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63889201) 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, 31944603 + 31944604.

It is an arithmetic number, because the mean of its divisors is an integer number (31944604).

Almost surely, 2^63889207 is an apocalyptic number.

63889207 is a deficient number, since it is larger than the sum of its proper divisors (1).

63889207 is an equidigital number, since it uses as much as digits as its factorization.

63889207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 63889207 is about 7993.0724380553. The cubic root of 63889207 is about 399.7690479285.

The spelling of 63889207 in words is "sixty-three million, eight hundred eighty-nine thousand, two hundred seven".