20940611 has 2 divisors, whose sum is σ = 20940612. Its totient is φ = 20940610.

The previous prime is 20940607. The next prime is 20940637. The reversal of 20940611 is 11604902.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20940611 - 2² = 20940607 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20940691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10470305 + 10470306.

It is an arithmetic number, because the mean of its divisors is an integer number (10470306).

Almost surely, 2^20940611 is an apocalyptic number.

20940611 is a deficient number, since it is larger than the sum of its proper divisors (1).

20940611 is an equidigital number, since it uses as much as digits as its factorization.

20940611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 20940611 is about 4576.0912359786. The cubic root of 20940611 is about 275.6320931153.

The spelling of 20940611 in words is "twenty million, nine hundred forty thousand, six hundred eleven".