648452293 has 2 divisors, whose sum is σ = 648452294. Its totient is φ = 648452292.

The previous prime is 648452263. The next prime is 648452359. The reversal of 648452293 is 392254846.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 493150849 + 155301444 = 22207^2 + 12462^2 .

It is a cyclic number.

It is not a de Polignac number, because 648452293 - 2⁵ = 648452261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (648452213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324226146 + 324226147.

It is an arithmetic number, because the mean of its divisors is an integer number (324226147).

Almost surely, 2^648452293 is an apocalyptic number.

It is an amenable number.

648452293 is a deficient number, since it is larger than the sum of its proper divisors (1).

648452293 is an equidigital number, since it uses as much as digits as its factorization.

648452293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 43.

The square root of 648452293 is about 25464.7264465967. The cubic root of 648452293 is about 865.5510285037.

The spelling of 648452293 in words is "six hundred forty-eight million, four hundred fifty-two thousand, two hundred ninety-three".