20708099 has 2 divisors, whose sum is σ = 20708100. Its totient is φ = 20708098.

The previous prime is 20708021. The next prime is 20708101. The reversal of 20708099 is 99080702.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20708099 - 2¹⁶ = 20642563 is a prime.

Together with 20708101, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20708399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10354049 + 10354050.

It is an arithmetic number, because the mean of its divisors is an integer number (10354050).

Almost surely, 2^20708099 is an apocalyptic number.

20708099 is a deficient number, since it is larger than the sum of its proper divisors (1).

20708099 is an equidigital number, since it uses as much as digits as its factorization.

20708099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 20708099 is about 4550.6152331306. The cubic root of 20708099 is about 274.6081427203.

The spelling of 20708099 in words is "twenty million, seven hundred eight thousand, ninety-nine".