648748411 has 2 divisors, whose sum is σ = 648748412. Its totient is φ = 648748410.

The previous prime is 648748393. The next prime is 648748423. The reversal of 648748411 is 114847846.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 648748411 - 2⁷ = 648748283 is a prime.

It is not a weakly prime, because it can be changed into another prime (648748211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324374205 + 324374206.

It is an arithmetic number, because the mean of its divisors is an integer number (324374206).

Almost surely, 2^648748411 is an apocalyptic number.

648748411 is a deficient number, since it is larger than the sum of its proper divisors (1).

648748411 is an equidigital number, since it uses as much as digits as its factorization.

648748411 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172032, while the sum is 43.

The square root of 648748411 is about 25470.5400610195. The cubic root of 648748411 is about 865.6827607519.

The spelling of 648748411 in words is "six hundred forty-eight million, seven hundred forty-eight thousand, four hundred eleven".