20617127 has 2 divisors, whose sum is σ = 20617128. Its totient is φ = 20617126.

The previous prime is 20617049. The next prime is 20617133. The reversal of 20617127 is 72171602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20617127 - 2¹² = 20613031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20617096 and 20617105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20617027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10308563 + 10308564.

It is an arithmetic number, because the mean of its divisors is an integer number (10308564).

Almost surely, 2^20617127 is an apocalyptic number.

20617127 is a deficient number, since it is larger than the sum of its proper divisors (1).

20617127 is an equidigital number, since it uses as much as digits as its factorization.

20617127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 20617127 is about 4540.6086596402. The cubic root of 20617127 is about 274.2054287306.

Adding to 20617127 its reverse (72171602), we get a palindrome (92788729).

The spelling of 20617127 in words is "twenty million, six hundred seventeen thousand, one hundred twenty-seven".