5643387 has 12 divisors (see below), whose sum is σ = 8306064. Its totient is φ = 3690960.

The previous prime is 5643383. The next prime is 5643389. The reversal of 5643387 is 7833465.

It is a happy number.

5643387 is a `hidden beast` number, since 5 + 643 + 3 + 8 + 7 = 666.

It is not a de Polignac number, because 5643387 - 2² = 5643383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5643383) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 5439 + ... + 6392.

It is an arithmetic number, because the mean of its divisors is an integer number (692172).

Almost surely, 2^5643387 is an apocalyptic number.

5643387 is a deficient number, since it is larger than the sum of its proper divisors (2662677).

5643387 is a wasteful number, since it uses less digits than its factorization.

5643387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11890 (or 11887 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 5643387 is about 2375.5814025202. The cubic root of 5643387 is about 178.0382340121.

The spelling of 5643387 in words is "five million, six hundred forty-three thousand, three hundred eighty-seven".