20064169 has 2 divisors, whose sum is σ = 20064170. Its totient is φ = 20064168.

The previous prime is 20064139. The next prime is 20064173. The reversal of 20064169 is 96146002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12709225 + 7354944 = 3565^2 + 2712^2 .

It is a cyclic number.

It is not a de Polignac number, because 20064169 - 2⁵ = 20064137 is a prime.

It is a super-2 number, since 2×20064169² = 805141755321122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20064139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10032084 + 10032085.

It is an arithmetic number, because the mean of its divisors is an integer number (10032085).

Almost surely, 2^20064169 is an apocalyptic number.

It is an amenable number.

20064169 is a deficient number, since it is larger than the sum of its proper divisors (1).

20064169 is an equidigital number, since it uses as much as digits as its factorization.

20064169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 20064169 is about 4479.3045219096. The cubic root of 20064169 is about 271.7317541782.

The spelling of 20064169 in words is "twenty million, sixty-four thousand, one hundred sixty-nine".