106663399 has 2 divisors, whose sum is σ = 106663400. Its totient is φ = 106663398.

The previous prime is 106663387. The next prime is 106663429. The reversal of 106663399 is 993366601.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 106663399 - 2⁹ = 106662887 is a prime.

It is a super-2 number, since 2×106663399² = 22754161372466402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (106663309) 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, 53331699 + 53331700.

It is an arithmetic number, because the mean of its divisors is an integer number (53331700).

Almost surely, 2^106663399 is an apocalyptic number.

106663399 is a deficient number, since it is larger than the sum of its proper divisors (1).

106663399 is an equidigital number, since it uses as much as digits as its factorization.

106663399 is an odious number, because the sum of its binary digits is odd.

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

The square root of 106663399 is about 10327.7973934426. The cubic root of 106663399 is about 474.2475977402.

The spelling of 106663399 in words is "one hundred six million, six hundred sixty-three thousand, three hundred ninety-nine".