20041617 has 4 divisors (see below), whose sum is σ = 26722160. Its totient is φ = 13361076.

The previous prime is 20041613. The next prime is 20041627. The reversal of 20041617 is 71614002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20041617 - 2² = 20041613 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20041593 and 20041602.

It is not an unprimeable number, because it can be changed into a prime (20041613) 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 in 3 ways as a sum of consecutive naturals, for example, 3340267 + ... + 3340272.

It is an arithmetic number, because the mean of its divisors is an integer number (6680540).

Almost surely, 2^20041617 is an apocalyptic number.

It is an amenable number.

20041617 is a deficient number, since it is larger than the sum of its proper divisors (6680543).

20041617 is an equidigital number, since it uses as much as digits as its factorization.

20041617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6680542.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 20041617 is about 4476.7864590574. The cubic root of 20041617 is about 271.6299077484.

Adding to 20041617 its reverse (71614002), we get a palindrome (91655619).

The spelling of 20041617 in words is "twenty million, forty-one thousand, six hundred seventeen".