20896091 has 2 divisors, whose sum is σ = 20896092. Its totient is φ = 20896090.

The previous prime is 20896087. The next prime is 20896093. The reversal of 20896091 is 19069802.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20896091 - 2² = 20896087 is a prime.

It is a Sophie Germain prime.

Together with 20896093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20896093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10448045 + 10448046.

It is an arithmetic number, because the mean of its divisors is an integer number (10448046).

Almost surely, 2^20896091 is an apocalyptic number.

20896091 is a deficient number, since it is larger than the sum of its proper divisors (1).

20896091 is an equidigital number, since it uses as much as digits as its factorization.

20896091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 20896091 is about 4571.2242342725. The cubic root of 20896091 is about 275.4366221034.

The spelling of 20896091 in words is "twenty million, eight hundred ninety-six thousand, ninety-one".