20876771 has 2 divisors, whose sum is σ = 20876772. Its totient is φ = 20876770.

The previous prime is 20876767. The next prime is 20876783. The reversal of 20876771 is 17767802.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20876771 - 2² = 20876767 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20876171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10438385 + 10438386.

It is an arithmetic number, because the mean of its divisors is an integer number (10438386).

Almost surely, 2^20876771 is an apocalyptic number.

20876771 is a deficient number, since it is larger than the sum of its proper divisors (1).

20876771 is an equidigital number, since it uses as much as digits as its factorization.

20876771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32928, while the sum is 38.

The square root of 20876771 is about 4569.1105261309. The cubic root of 20876771 is about 275.3517086714.

The spelling of 20876771 in words is "twenty million, eight hundred seventy-six thousand, seven hundred seventy-one".