20134663 has 2 divisors, whose sum is σ = 20134664. Its totient is φ = 20134662.

The previous prime is 20134643. The next prime is 20134669. The reversal of 20134663 is 36643102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20134663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20134669) 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, 10067331 + 10067332.

It is an arithmetic number, because the mean of its divisors is an integer number (10067332).

Almost surely, 2^20134663 is an apocalyptic number.

20134663 is a deficient number, since it is larger than the sum of its proper divisors (1).

20134663 is an equidigital number, since it uses as much as digits as its factorization.

20134663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 20134663 is about 4487.1664778566. The cubic root of 20134663 is about 272.0496187954.

Adding to 20134663 its reverse (36643102), we get a palindrome (56777765).

The spelling of 20134663 in words is "twenty million, one hundred thirty-four thousand, six hundred sixty-three".