20267671 has 2 divisors, whose sum is σ = 20267672. Its totient is φ = 20267670.

The previous prime is 20267659. The next prime is 20267717. The reversal of 20267671 is 17676202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20267671 - 2²¹ = 18170519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20267641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10133835 + 10133836.

It is an arithmetic number, because the mean of its divisors is an integer number (10133836).

Almost surely, 2^20267671 is an apocalyptic number.

20267671 is a deficient number, since it is larger than the sum of its proper divisors (1).

20267671 is an equidigital number, since it uses as much as digits as its factorization.

20267671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 20267671 is about 4501.9630162852. The cubic root of 20267671 is about 272.6473506588.

The spelling of 20267671 in words is "twenty million, two hundred sixty-seven thousand, six hundred seventy-one".