12001684 has 12 divisors (see below), whose sum is σ = 21515508. Its totient is φ = 5854400.

The previous prime is 12001667. The next prime is 12001697. The reversal of 12001684 is 48610021.

It can be written as a sum of positive squares in 2 ways, for example, as 1633284 + 10368400 = 1278^2 + 3220^2 .

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 36427 + ... + 36754.

It is an arithmetic number, because the mean of its divisors is an integer number (1792959).

Almost surely, 2^12001684 is an apocalyptic number.

It is an amenable number.

12001684 is a deficient number, since it is larger than the sum of its proper divisors (9513824).

12001684 is a wasteful number, since it uses less digits than its factorization.

12001684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73226 (or 73224 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 12001684 is about 3464.3446710742. The cubic root of 12001684 is about 228.9535574474.

The spelling of 12001684 in words is "twelve million, one thousand, six hundred eighty-four".