12066538 has 16 divisors (see below), whose sum is σ = 19799136. Its totient is φ = 5469840.

The previous prime is 12066517. The next prime is 12066547. The reversal of 12066538 is 83566021.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13720 + ... + 14572.

It is an arithmetic number, because the mean of its divisors is an integer number (1237446).

Almost surely, 2^12066538 is an apocalyptic number.

12066538 is a deficient number, since it is larger than the sum of its proper divisors (7732598).

12066538 is a wasteful number, since it uses less digits than its factorization.

12066538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1509.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 12066538 is about 3473.6922719205. The cubic root of 12066538 is about 229.3652187916.

It can be divided in two parts, 1206 and 6538, that added together give a square (7744 = 88²).

The spelling of 12066538 in words is "twelve million, sixty-six thousand, five hundred thirty-eight".