20068471 has 2 divisors, whose sum is σ = 20068472. Its totient is φ = 20068470.

The previous prime is 20068469. The next prime is 20068511. The reversal of 20068471 is 17486002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20068471 - 2¹ = 20068469 is a prime.

It is a super-3 number, since 3×20068471³ (a number of 23 digits) contains 333 as substring.

Together with 20068469, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_1274707 and since 20068471 and 1274707 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20068271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10034235 + 10034236.

It is an arithmetic number, because the mean of its divisors is an integer number (10034236).

Almost surely, 2^20068471 is an apocalyptic number.

20068471 is a deficient number, since it is larger than the sum of its proper divisors (1).

20068471 is an equidigital number, since it uses as much as digits as its factorization.

20068471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 20068471 is about 4479.7847046482. The cubic root of 20068471 is about 271.7511736462.

The spelling of 20068471 in words is "twenty million, sixty-eight thousand, four hundred seventy-one".