5643724 has 6 divisors (see below), whose sum is σ = 9876524. Its totient is φ = 2821860.

The previous prime is 5643709. The next prime is 5643727. The reversal of 5643724 is 4273465.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (5643727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 705462 + ... + 705469.

Almost surely, 2^5643724 is an apocalyptic number.

It is an amenable number.

5643724 is a deficient number, since it is larger than the sum of its proper divisors (4232800).

5643724 is a wasteful number, since it uses less digits than its factorization.

5643724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410935 (or 1410933 counting only the distinct ones).

The product of its digits is 20160, while the sum is 31.

The square root of 5643724 is about 2375.6523314660. The cubic root of 5643724 is about 178.0417778468.

The spelling of 5643724 in words is "five million, six hundred forty-three thousand, seven hundred twenty-four".