20040067 has 2 divisors, whose sum is σ = 20040068. Its totient is φ = 20040066.

The previous prime is 20040049. The next prime is 20040071. The reversal of 20040067 is 76004002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20040067 - 2²³ = 11651459 is a prime.

It is equal to p_1273006 and since 20040067 and 1273006 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (20040667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10020033 + 10020034.

It is an arithmetic number, because the mean of its divisors is an integer number (10020034).

Almost surely, 2^20040067 is an apocalyptic number.

20040067 is a deficient number, since it is larger than the sum of its proper divisors (1).

20040067 is an equidigital number, since it uses as much as digits as its factorization.

20040067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 20040067 is about 4476.6133404617. The cubic root of 20040067 is about 271.6229050332.

Adding to 20040067 its reverse (76004002), we get a palindrome (96044069).

The spelling of 20040067 in words is "twenty million, forty thousand, sixty-seven".