648269 has 2 divisors, whose sum is σ = 648270. Its totient is φ = 648268.

The previous prime is 648259. The next prime is 648283. The reversal of 648269 is 962846.

648269 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 619369 + 28900 = 787^2 + 170^2 .

It is a cyclic number.

It is not a de Polignac number, because 648269 - 2¹² = 644173 is a prime.

It is a super-2 number, since 2×648269² = 840505392722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (648229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324134 + 324135.

It is an arithmetic number, because the mean of its divisors is an integer number (324135).

2⁶⁴⁸²⁶⁹ is an apocalyptic number.

It is an amenable number.

648269 is a deficient number, since it is larger than the sum of its proper divisors (1).

648269 is an equidigital number, since it uses as much as digits as its factorization.

648269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 35.

The square root of 648269 is about 805.1515385317. The cubic root of 648269 is about 86.5469467944.

The spelling of 648269 in words is "six hundred forty-eight thousand, two hundred sixty-nine".