129698663 has 2 divisors, whose sum is σ = 129698664. Its totient is φ = 129698662.

The previous prime is 129698629. The next prime is 129698671. The reversal of 129698663 is 366896921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129698663 - 2¹⁰ = 129697639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129698683) 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, 64849331 + 64849332.

It is an arithmetic number, because the mean of its divisors is an integer number (64849332).

Almost surely, 2^129698663 is an apocalyptic number.

129698663 is a deficient number, since it is larger than the sum of its proper divisors (1).

129698663 is an equidigital number, since it uses as much as digits as its factorization.

129698663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 50.

The square root of 129698663 is about 11388.5320827576. The cubic root of 129698663 is about 506.1879857381.

The spelling of 129698663 in words is "one hundred twenty-nine million, six hundred ninety-eight thousand, six hundred sixty-three".