20506067 has 2 divisors, whose sum is σ = 20506068. Its totient is φ = 20506066.

The previous prime is 20506051. The next prime is 20506081. The reversal of 20506067 is 76060502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20506067 - 2⁴ = 20506051 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20506037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10253033 + 10253034.

It is an arithmetic number, because the mean of its divisors is an integer number (10253034).

Almost surely, 2^20506067 is an apocalyptic number.

20506067 is a deficient number, since it is larger than the sum of its proper divisors (1).

20506067 is an equidigital number, since it uses as much as digits as its factorization.

20506067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 20506067 is about 4528.3625075738. The cubic root of 20506067 is about 273.7121802315.

Adding to 20506067 its reverse (76060502), we get a palindrome (96566569).

The spelling of 20506067 in words is "twenty million, five hundred six thousand, sixty-seven".