648770459 has 2 divisors, whose sum is σ = 648770460. Its totient is φ = 648770458.

The previous prime is 648770411. The next prime is 648770467. The reversal of 648770459 is 954077846.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 648770459 - 2⁸ = 648770203 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (648770159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324385229 + 324385230.

It is an arithmetic number, because the mean of its divisors is an integer number (324385230).

Almost surely, 2^648770459 is an apocalyptic number.

648770459 is a deficient number, since it is larger than the sum of its proper divisors (1).

648770459 is an equidigital number, since it uses as much as digits as its factorization.

648770459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1693440, while the sum is 50.

The square root of 648770459 is about 25470.9728710939. The cubic root of 648770459 is about 865.6925675105.

The spelling of 648770459 in words is "six hundred forty-eight million, seven hundred seventy thousand, four hundred fifty-nine".