5640673 has 2 divisors, whose sum is σ = 5640674. Its totient is φ = 5640672.

The previous prime is 5640671. The next prime is 5640683. The reversal of 5640673 is 3760465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4695889 + 944784 = 2167^2 + 972^2 .

It is a cyclic number.

It is not a de Polignac number, because 5640673 - 2¹ = 5640671 is a prime.

Together with 5640671, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (5640671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2820336 + 2820337.

It is an arithmetic number, because the mean of its divisors is an integer number (2820337).

Almost surely, 2^5640673 is an apocalyptic number.

It is an amenable number.

5640673 is a deficient number, since it is larger than the sum of its proper divisors (1).

5640673 is an equidigital number, since it uses as much as digits as its factorization.

5640673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 5640673 is about 2375.0101052417. The cubic root of 5640673 is about 178.0096889058.

The spelling of 5640673 in words is "five million, six hundred forty thousand, six hundred seventy-three".