20090611 has 2 divisors, whose sum is σ = 20090612. Its totient is φ = 20090610.

The previous prime is 20090599. The next prime is 20090627. The reversal of 20090611 is 11609002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20090611 - 2⁹ = 20090099 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20090671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10045305 + 10045306.

It is an arithmetic number, because the mean of its divisors is an integer number (10045306).

Almost surely, 2^20090611 is an apocalyptic number.

20090611 is a deficient number, since it is larger than the sum of its proper divisors (1).

20090611 is an equidigital number, since it uses as much as digits as its factorization.

20090611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 20090611 is about 4482.2551243766. The cubic root of 20090611 is about 271.8510709727.

Adding to 20090611 its reverse (11609002), we get a palindrome (31699613).

The spelling of 20090611 in words is "twenty million, ninety thousand, six hundred eleven".