20168699 has 2 divisors, whose sum is σ = 20168700. Its totient is φ = 20168698.

The previous prime is 20168689. The next prime is 20168711. The reversal of 20168699 is 99686102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20168699 - 2⁴ = 20168683 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20168609) 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, 10084349 + 10084350.

It is an arithmetic number, because the mean of its divisors is an integer number (10084350).

Almost surely, 2^20168699 is an apocalyptic number.

20168699 is a deficient number, since it is larger than the sum of its proper divisors (1).

20168699 is an equidigital number, since it uses as much as digits as its factorization.

20168699 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 20168699 is about 4490.9574702952. The cubic root of 20168699 is about 272.2028250390.

The spelling of 20168699 in words is "twenty million, one hundred sixty-eight thousand, six hundred ninety-nine".