20589677 has 2 divisors, whose sum is σ = 20589678. Its totient is φ = 20589676.

The previous prime is 20589641. The next prime is 20589707. The reversal of 20589677 is 77698502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13756681 + 6832996 = 3709^2 + 2614^2 .

It is a cyclic number.

It is not a de Polignac number, because 20589677 - 2¹⁰ = 20588653 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20589607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10294838 + 10294839.

It is an arithmetic number, because the mean of its divisors is an integer number (10294839).

Almost surely, 2^20589677 is an apocalyptic number.

It is an amenable number.

20589677 is a deficient number, since it is larger than the sum of its proper divisors (1).

20589677 is an equidigital number, since it uses as much as digits as its factorization.

20589677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 20589677 is about 4537.5849303346. The cubic root of 20589677 is about 274.0836807297.

The spelling of 20589677 in words is "twenty million, five hundred eighty-nine thousand, six hundred seventy-seven".