20007066 has 16 divisors (see below), whose sum is σ = 40521600. Its totient is φ = 6584448.

The previous prime is 20007061. The next prime is 20007107. The reversal of 20007066 is 66070002.

It is not an unprimeable number, because it can be changed into a prime (20007061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20631 + ... + 21578.

It is an arithmetic number, because the mean of its divisors is an integer number (2532600).

Almost surely, 2^20007066 is an apocalyptic number.

20007066 is an abundant number, since it is smaller than the sum of its proper divisors (20514534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20007066 is a wasteful number, since it uses less digits than its factorization.

20007066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42293.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 20007066 is about 4472.9258880514. The cubic root of 20007066 is about 271.4737246871.

Adding to 20007066 its reverse (66070002), we get a palindrome (86077068).

The spelling of 20007066 in words is "twenty million, seven thousand, sixty-six".