20068871 has 2 divisors, whose sum is σ = 20068872. Its totient is φ = 20068870.

The previous prime is 20068849. The next prime is 20068901. The reversal of 20068871 is 17886002.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20068871 is a 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 (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10034435 + 10034436.

It is an arithmetic number, because the mean of its divisors is an integer number (10034436).

Almost surely, 2^20068871 is an apocalyptic number.

20068871 is a deficient number, since it is larger than the sum of its proper divisors (1).

20068871 is an equidigital number, since it uses as much as digits as its factorization.

20068871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 20068871 is about 4479.8293494284. The cubic root of 20068871 is about 271.7529791275.

The spelling of 20068871 in words is "twenty million, sixty-eight thousand, eight hundred seventy-one".