20704469 has 2 divisors, whose sum is σ = 20704470. Its totient is φ = 20704468.

The previous prime is 20704459. The next prime is 20704499. The reversal of 20704469 is 96440702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18601969 + 2102500 = 4313^2 + 1450^2 .

It is a cyclic number.

It is not a de Polignac number, because 20704469 - 2⁸ = 20704213 is a prime.

It is a super-2 number, since 2×20704469² = 857350073143922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20704459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10352234 + 10352235.

It is an arithmetic number, because the mean of its divisors is an integer number (10352235).

Almost surely, 2^20704469 is an apocalyptic number.

It is an amenable number.

20704469 is a deficient number, since it is larger than the sum of its proper divisors (1).

20704469 is an equidigital number, since it uses as much as digits as its factorization.

20704469 is an evil number, because the sum of its binary digits is even.

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

The square root of 20704469 is about 4550.2163684818. The cubic root of 20704469 is about 274.5920960870.

The spelling of 20704469 in words is "twenty million, seven hundred four thousand, four hundred sixty-nine".