20914679 has 2 divisors, whose sum is σ = 20914680. Its totient is φ = 20914678.

The previous prime is 20914669. The next prime is 20914681. The reversal of 20914679 is 97641902.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20914679 is a prime.

Together with 20914681, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20914609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10457339 + 10457340.

It is an arithmetic number, because the mean of its divisors is an integer number (10457340).

Almost surely, 2^20914679 is an apocalyptic number.

20914679 is a deficient number, since it is larger than the sum of its proper divisors (1).

20914679 is an equidigital number, since it uses as much as digits as its factorization.

20914679 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 20914679 is about 4573.2569357079. The cubic root of 20914679 is about 275.5182689304.

The spelling of 20914679 in words is "twenty million, nine hundred fourteen thousand, six hundred seventy-nine".