647303 has 2 divisors, whose sum is σ = 647304. Its totient is φ = 647302.

The previous prime is 647293. The next prime is 647321. The reversal of 647303 is 303746.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 647303 - 2⁸ = 647047 is a prime.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 647303.

It is not a weakly prime, because it can be changed into another prime (647333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323651 + 323652.

It is an arithmetic number, because the mean of its divisors is an integer number (323652).

2⁶⁴⁷³⁰³ is an apocalyptic number.

647303 is a deficient number, since it is larger than the sum of its proper divisors (1).

647303 is an equidigital number, since it uses as much as digits as its factorization.

647303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 647303 is about 804.5514278155. The cubic root of 647303 is about 86.5039369164.

The spelling of 647303 in words is "six hundred forty-seven thousand, three hundred three".