20676329 has 2 divisors, whose sum is σ = 20676330. Its totient is φ = 20676328.

The previous prime is 20676277. The next prime is 20676361. The reversal of 20676329 is 92367602.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20475625 + 200704 = 4525^2 + 448^2 .

It is a cyclic number.

It is not a de Polignac number, because 20676329 - 2²⁰ = 19627753 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20676629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10338164 + 10338165.

It is an arithmetic number, because the mean of its divisors is an integer number (10338165).

Almost surely, 2^20676329 is an apocalyptic number.

It is an amenable number.

20676329 is a deficient number, since it is larger than the sum of its proper divisors (1).

20676329 is an equidigital number, since it uses as much as digits as its factorization.

20676329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 20676329 is about 4547.1231564584. The cubic root of 20676329 is about 274.4676378538.

The spelling of 20676329 in words is "twenty million, six hundred seventy-six thousand, three hundred twenty-nine".