648317 has 2 divisors, whose sum is σ = 648318. Its totient is φ = 648316.

The previous prime is 648293. The next prime is 648331. The reversal of 648317 is 713846.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 538756 + 109561 = 734^2 + 331^2 .

It is a cyclic number.

It is not a de Polignac number, because 648317 - 2⁸ = 648061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 648317.

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 648317.

It is not a weakly prime, because it can be changed into another prime (648377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324158 + 324159.

It is an arithmetic number, because the mean of its divisors is an integer number (324159).

2⁶⁴⁸³¹⁷ is an apocalyptic number.

It is an amenable number.

648317 is a deficient number, since it is larger than the sum of its proper divisors (1).

648317 is an equidigital number, since it uses as much as digits as its factorization.

648317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 29.

The square root of 648317 is about 805.1813460333. The cubic root of 648317 is about 86.5490828166.

The spelling of 648317 in words is "six hundred forty-eight thousand, three hundred seventeen".