648578323 has 2 divisors, whose sum is σ = 648578324. Its totient is φ = 648578322.

The previous prime is 648578279. The next prime is 648578353. The reversal of 648578323 is 323875846.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 648578323 - 2²⁵ = 615023891 is a prime.

It is not a weakly prime, because it can be changed into another prime (648578353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324289161 + 324289162.

It is an arithmetic number, because the mean of its divisors is an integer number (324289162).

Almost surely, 2^648578323 is an apocalyptic number.

648578323 is a deficient number, since it is larger than the sum of its proper divisors (1).

648578323 is an equidigital number, since it uses as much as digits as its factorization.

648578323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 967680, while the sum is 46.

The square root of 648578323 is about 25467.2009258968. The cubic root of 648578323 is about 865.6070996190.

The spelling of 648578323 in words is "six hundred forty-eight million, five hundred seventy-eight thousand, three hundred twenty-three".