20614771 has 2 divisors, whose sum is σ = 20614772. Its totient is φ = 20614770.

The previous prime is 20614747. The next prime is 20614787. The reversal of 20614771 is 17741602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20614771 - 2¹¹ = 20612723 is a prime.

It is not a weakly prime, because it can be changed into another prime (20614171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10307385 + 10307386.

It is an arithmetic number, because the mean of its divisors is an integer number (10307386).

Almost surely, 2^20614771 is an apocalyptic number.

20614771 is a deficient number, since it is larger than the sum of its proper divisors (1).

20614771 is an equidigital number, since it uses as much as digits as its factorization.

20614771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 20614771 is about 4540.3492156441. The cubic root of 20614771 is about 274.1949834893.

The spelling of 20614771 in words is "twenty million, six hundred fourteen thousand, seven hundred seventy-one".