20717119 has 2 divisors, whose sum is σ = 20717120. Its totient is φ = 20717118.

The previous prime is 20717113. The next prime is 20717131. The reversal of 20717119 is 91171702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20717119 - 2¹⁹ = 20192831 is a prime.

It is a super-2 number, since 2×20717119² = 858398039320322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20717113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10358559 + 10358560.

It is an arithmetic number, because the mean of its divisors is an integer number (10358560).

Almost surely, 2^20717119 is an apocalyptic number.

20717119 is a deficient number, since it is larger than the sum of its proper divisors (1).

20717119 is an equidigital number, since it uses as much as digits as its factorization.

20717119 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 882, while the sum is 28.

The square root of 20717119 is about 4551.6062000134. The cubic root of 20717119 is about 274.6480080551.

The spelling of 20717119 in words is "twenty million, seven hundred seventeen thousand, one hundred nineteen".