20004667 has 2 divisors, whose sum is σ = 20004668. Its totient is φ = 20004666.

The previous prime is 20004583. The next prime is 20004683. The reversal of 20004667 is 76640002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20004667 - 2¹⁵ = 19971899 is a prime.

It is not a weakly prime, because it can be changed into another prime (20004367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10002333 + 10002334.

It is an arithmetic number, because the mean of its divisors is an integer number (10002334).

Almost surely, 2^20004667 is an apocalyptic number.

20004667 is a deficient number, since it is larger than the sum of its proper divisors (1).

20004667 is an equidigital number, since it uses as much as digits as its factorization.

20004667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 20004667 is about 4472.6577110260. The cubic root of 20004667 is about 271.4628736624.

Adding to 20004667 its reverse (76640002), we get a palindrome (96644669).

The spelling of 20004667 in words is "twenty million, four thousand, six hundred sixty-seven".