20066512 has 10 divisors (see below), whose sum is σ = 38878898. Its totient is φ = 10033248.

The previous prime is 20066503. The next prime is 20066513. The reversal of 20066512 is 21566002.

It can be written as a sum of positive squares in only one way, i.e., 15555136 + 4511376 = 3944^2 + 2124^2 .

It is a super-2 number, since 2×20066512² = 805329807692288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20066513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627063 + ... + 627094.

Almost surely, 2^20066512 is an apocalyptic number.

It is an amenable number.

20066512 is a deficient number, since it is larger than the sum of its proper divisors (18812386).

20066512 is a wasteful number, since it uses less digits than its factorization.

20066512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254165 (or 1254159 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 20066512 is about 4479.5660504116. The cubic root of 20066512 is about 271.7423309551.

The spelling of 20066512 in words is "twenty million, sixty-six thousand, five hundred twelve".