12047643 has 16 divisors (see below), whose sum is σ = 17984160. Its totient is φ = 7970688.

The previous prime is 12047641. The next prime is 12047647. The reversal of 12047643 is 34674021.

12047643 is a `hidden beast` number, since 12 + 0 + 4 + 7 + 643 = 666.

It is not a de Polignac number, because 12047643 - 2¹ = 12047641 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12047641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2071 + ... + 5327.

It is an arithmetic number, because the mean of its divisors is an integer number (1124010).

Almost surely, 2^12047643 is an apocalyptic number.

12047643 is a deficient number, since it is larger than the sum of its proper divisors (5936517).

12047643 is a wasteful number, since it uses less digits than its factorization.

12047643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3403 (or 3397 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 12047643 is about 3470.9714778431. The cubic root of 12047643 is about 229.2454351964.

The spelling of 12047643 in words is "twelve million, forty-seven thousand, six hundred forty-three".