20045066 has 8 divisors (see below), whose sum is σ = 30365604. Its totient is φ = 9923200.

The previous prime is 20045063. The next prime is 20045087. The reversal of 20045066 is 66054002.

It can be written as a sum of positive squares in 2 ways, for example, as 19989841 + 55225 = 4471^2 + 235^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20045063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49415 + ... + 49818.

Almost surely, 2^20045066 is an apocalyptic number.

20045066 is a deficient number, since it is larger than the sum of its proper divisors (10320538).

20045066 is a wasteful number, since it uses less digits than its factorization.

20045066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99336.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 20045066 is about 4477.1716518356. The cubic root of 20045066 is about 271.6454886239.

Adding to 20045066 its reverse (66054002), we get a palindrome (86099068).

The spelling of 20045066 in words is "twenty million, forty-five thousand, sixty-six".