5640629 has 2 divisors, whose sum is σ = 5640630. Its totient is φ = 5640628.

The previous prime is 5640623. The next prime is 5640643. The reversal of 5640629 is 9260465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5640625 + 4 = 2375^2 + 2^2 .

It is a cyclic number.

It is not a de Polignac number, because 5640629 - 2⁸ = 5640373 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 5640595 and 5640604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5640623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2820314 + 2820315.

It is an arithmetic number, because the mean of its divisors is an integer number (2820315).

Almost surely, 2^5640629 is an apocalyptic number.

It is an amenable number.

5640629 is a deficient number, since it is larger than the sum of its proper divisors (1).

5640629 is an equidigital number, since it uses as much as digits as its factorization.

5640629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 5640629 is about 2375.0008421051. Note that the first 3 decimals coincide. The cubic root of 5640629 is about 178.0092260504.

The spelling of 5640629 in words is "five million, six hundred forty thousand, six hundred twenty-nine".