648769727 has 2 divisors, whose sum is σ = 648769728. Its totient is φ = 648769726.

The previous prime is 648769699. The next prime is 648769739. The reversal of 648769727 is 727967846.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 648769727 - 2¹⁶ = 648704191 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (648765727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324384863 + 324384864.

It is an arithmetic number, because the mean of its divisors is an integer number (324384864).

Almost surely, 2^648769727 is an apocalyptic number.

648769727 is a deficient number, since it is larger than the sum of its proper divisors (1).

648769727 is an equidigital number, since it uses as much as digits as its factorization.

648769727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7112448, while the sum is 56.

The square root of 648769727 is about 25470.9585017918. The cubic root of 648769727 is about 865.6922419269.

The spelling of 648769727 in words is "six hundred forty-eight million, seven hundred sixty-nine thousand, seven hundred twenty-seven".