63166399 has 2 divisors, whose sum is σ = 63166400. Its totient is φ = 63166398.

The previous prime is 63166387. The next prime is 63166423. The reversal of 63166399 is 99366136.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63166399 - 2⁹ = 63165887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63166319) 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, 31583199 + 31583200.

It is an arithmetic number, because the mean of its divisors is an integer number (31583200).

Almost surely, 2^63166399 is an apocalyptic number.

63166399 is a deficient number, since it is larger than the sum of its proper divisors (1).

63166399 is an equidigital number, since it uses as much as digits as its factorization.

63166399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 157464, while the sum is 43.

The square root of 63166399 is about 7947.7291725373. The cubic root of 63166399 is about 398.2557361651.

The spelling of 63166399 in words is "sixty-three million, one hundred sixty-six thousand, three hundred ninety-nine".