20008066 has 8 divisors (see below), whose sum is σ = 32320764. Its totient is φ = 9234480.

The previous prime is 20008049. The next prime is 20008073. The reversal of 20008066 is 66080002.

It can be written as a sum of positive squares in 2 ways, for example, as 19989841 + 18225 = 4471^2 + 135^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 384745 + ... + 384796.

Almost surely, 2^20008066 is an apocalyptic number.

20008066 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20008066 is a deficient number, since it is larger than the sum of its proper divisors (12312698).

20008066 is a wasteful number, since it uses less digits than its factorization.

20008066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769556.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 20008066 is about 4473.0376703086. The cubic root of 20008066 is about 271.4782475758.

Adding to 20008066 its reverse (66080002), we get a palindrome (86088068).

The spelling of 20008066 in words is "twenty million, eight thousand, sixty-six".