20834617 has 2 divisors, whose sum is σ = 20834618. Its totient is φ = 20834616.

The previous prime is 20834609. The next prime is 20834623. The reversal of 20834617 is 71643802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10569001 + 10265616 = 3251^2 + 3204^2 .

It is a cyclic number.

It is not a de Polignac number, because 20834617 - 2³ = 20834609 is a prime.

It is not a weakly prime, because it can be changed into another prime (20834647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10417308 + 10417309.

It is an arithmetic number, because the mean of its divisors is an integer number (10417309).

Almost surely, 2^20834617 is an apocalyptic number.

It is an amenable number.

20834617 is a deficient number, since it is larger than the sum of its proper divisors (1).

20834617 is an equidigital number, since it uses as much as digits as its factorization.

20834617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 20834617 is about 4564.4952623483. The cubic root of 20834617 is about 275.1662553904.

The spelling of 20834617 in words is "twenty million, eight hundred thirty-four thousand, six hundred seventeen".