20760871 has 2 divisors, whose sum is σ = 20760872. Its totient is φ = 20760870.

The previous prime is 20760869. The next prime is 20760877. The reversal of 20760871 is 17806702.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20760871 - 2¹ = 20760869 is a prime.

Together with 20760869, 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 (20760877) 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, 10380435 + 10380436.

It is an arithmetic number, because the mean of its divisors is an integer number (10380436).

Almost surely, 2^20760871 is an apocalyptic number.

20760871 is a deficient number, since it is larger than the sum of its proper divisors (1).

20760871 is an equidigital number, since it uses as much as digits as its factorization.

20760871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 20760871 is about 4556.4098805968. The cubic root of 20760871 is about 274.8412130161.

The spelling of 20760871 in words is "twenty million, seven hundred sixty thousand, eight hundred seventy-one".