20616041 has 2 divisors, whose sum is σ = 20616042. Its totient is φ = 20616040.

The previous prime is 20616031. The next prime is 20616091. The reversal of 20616041 is 14061602.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19616041 + 1000000 = 4429^2 + 1000^2 .

It is a cyclic number.

It is not a de Polignac number, because 20616041 - 2⁶ = 20615977 is a prime.

It is a super-2 number, since 2×20616041² = 850042293027362, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20616031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10308020 + 10308021.

It is an arithmetic number, because the mean of its divisors is an integer number (10308021).

Almost surely, 2^20616041 is an apocalyptic number.

It is an amenable number.

20616041 is a deficient number, since it is larger than the sum of its proper divisors (1).

20616041 is an equidigital number, since it uses as much as digits as its factorization.

20616041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 20616041 is about 4540.4890705738. The cubic root of 20616041 is about 274.2006140875.

Adding to 20616041 its reverse (14061602), we get a palindrome (34677643).

The spelling of 20616041 in words is "twenty million, six hundred sixteen thousand, forty-one".