20741879 has 2 divisors, whose sum is σ = 20741880. Its totient is φ = 20741878.

The previous prime is 20741857. The next prime is 20741947. The reversal of 20741879 is 97814702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20741879 - 2²⁴ = 3964663 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 (20741839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10370939 + 10370940.

It is an arithmetic number, because the mean of its divisors is an integer number (10370940).

Almost surely, 2^20741879 is an apocalyptic number.

20741879 is a deficient number, since it is larger than the sum of its proper divisors (1).

20741879 is an equidigital number, since it uses as much as digits as its factorization.

20741879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 20741879 is about 4554.3253067826. The cubic root of 20741879 is about 274.7573793977.

The spelling of 20741879 in words is "twenty million, seven hundred forty-one thousand, eight hundred seventy-nine".