20676893 has 2 divisors, whose sum is σ = 20676894. Its totient is φ = 20676892.

The previous prime is 20676889. The next prime is 20676919. The reversal of 20676893 is 39867602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20232004 + 444889 = 4498^2 + 667^2 .

It is a cyclic number.

It is not a de Polignac number, because 20676893 - 2² = 20676889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20676893.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20676863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10338446 + 10338447.

It is an arithmetic number, because the mean of its divisors is an integer number (10338447).

Almost surely, 2^20676893 is an apocalyptic number.

It is an amenable number.

20676893 is a deficient number, since it is larger than the sum of its proper divisors (1).

20676893 is an equidigital number, since it uses as much as digits as its factorization.

20676893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 20676893 is about 4547.1851732693. The cubic root of 20676893 is about 274.4701334344.

The spelling of 20676893 in words is "twenty million, six hundred seventy-six thousand, eight hundred ninety-three".