20466671 has 2 divisors, whose sum is σ = 20466672. Its totient is φ = 20466670.

The previous prime is 20466653. The next prime is 20466679. The reversal of 20466671 is 17666402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20466671 - 2¹⁰ = 20465647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20466679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10233335 + 10233336.

It is an arithmetic number, because the mean of its divisors is an integer number (10233336).

Almost surely, 2^20466671 is an apocalyptic number.

20466671 is a deficient number, since it is larger than the sum of its proper divisors (1).

20466671 is an equidigital number, since it uses as much as digits as its factorization.

20466671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 20466671 is about 4524.0104995457. The cubic root of 20466671 is about 273.5367837188.

The spelling of 20466671 in words is "twenty million, four hundred sixty-six thousand, six hundred seventy-one".