648748423 has 2 divisors, whose sum is σ = 648748424. Its totient is φ = 648748422.

The previous prime is 648748411. The next prime is 648748433. The reversal of 648748423 is 324847846.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 648748423 - 2¹⁷ = 648617351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (648748433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324374211 + 324374212.

It is an arithmetic number, because the mean of its divisors is an integer number (324374212).

Almost surely, 2^648748423 is an apocalyptic number.

648748423 is a deficient number, since it is larger than the sum of its proper divisors (1).

648748423 is an equidigital number, since it uses as much as digits as its factorization.

648748423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1032192, while the sum is 46.

The square root of 648748423 is about 25470.5402965858. The cubic root of 648748423 is about 865.6827660894.

The spelling of 648748423 in words is "six hundred forty-eight million, seven hundred forty-eight thousand, four hundred twenty-three".