12520066 has 16 divisors (see below), whose sum is σ = 20289024. Its totient is φ = 5760144.

The previous prime is 12520051. The next prime is 12520091. The reversal of 12520066 is 66002521.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10975 + ... + 12061.

It is an arithmetic number, because the mean of its divisors is an integer number (1268064).

Almost surely, 2^12520066 is an apocalyptic number.

12520066 is a deficient number, since it is larger than the sum of its proper divisors (7768958).

12520066 is a wasteful number, since it uses less digits than its factorization.

12520066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1545.

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

The square root of 12520066 is about 3538.3705289299. The cubic root of 12520066 is about 232.2035594518.

Adding to 12520066 its reverse (66002521), we get a palindrome (78522587).

The spelling of 12520066 in words is "twelve million, five hundred twenty thousand, sixty-six".