20796871 has 2 divisors, whose sum is σ = 20796872. Its totient is φ = 20796870.

The previous prime is 20796869. The next prime is 20796901. The reversal of 20796871 is 17869702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20796871 - 2¹ = 20796869 is a prime.

Together with 20796869, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20790871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10398435 + 10398436.

It is an arithmetic number, because the mean of its divisors is an integer number (10398436).

Almost surely, 2^20796871 is an apocalyptic number.

20796871 is a deficient number, since it is larger than the sum of its proper divisors (1).

20796871 is an equidigital number, since it uses as much as digits as its factorization.

20796871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 20796871 is about 4560.3586481767. The cubic root of 20796871 is about 274.9999823691. Note that the first 4 decimals are identical.

The spelling of 20796871 in words is "twenty million, seven hundred ninety-six thousand, eight hundred seventy-one".