20606711 has 2 divisors, whose sum is σ = 20606712. Its totient is φ = 20606710.

The previous prime is 20606681. The next prime is 20606713. The reversal of 20606711 is 11760602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20606711 - 2¹⁴ = 20590327 is a prime.

Together with 20606713, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20606713) 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, 10303355 + 10303356.

It is an arithmetic number, because the mean of its divisors is an integer number (10303356).

Almost surely, 2^20606711 is an apocalyptic number.

20606711 is a deficient number, since it is larger than the sum of its proper divisors (1).

20606711 is an equidigital number, since it uses as much as digits as its factorization.

20606711 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 20606711 is about 4539.4615319441. The cubic root of 20606711 is about 274.1592437495.

The spelling of 20606711 in words is "twenty million, six hundred six thousand, seven hundred eleven".