5640743 has 2 divisors, whose sum is σ = 5640744. Its totient is φ = 5640742.

The previous prime is 5640721. The next prime is 5640769. The reversal of 5640743 is 3470465.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5640743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5640043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2820371 + 2820372.

It is an arithmetic number, because the mean of its divisors is an integer number (2820372).

Almost surely, 2^5640743 is an apocalyptic number.

5640743 is a deficient number, since it is larger than the sum of its proper divisors (1).

5640743 is an equidigital number, since it uses as much as digits as its factorization.

5640743 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 5640743 is about 2375.0248419753. The cubic root of 5640743 is about 178.0104252615.

The spelling of 5640743 in words is "five million, six hundred forty thousand, seven hundred forty-three".