648856733207 has 2 divisors, whose sum is σ = 648856733208. Its totient is φ = 648856733206.

The previous prime is 648856733177. The next prime is 648856733209. The reversal of 648856733207 is 702337658846.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 648856733207 - 2¹⁶ = 648856667671 is a prime.

Together with 648856733209, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (648856733209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324428366603 + 324428366604.

It is an arithmetic number, because the mean of its divisors is an integer number (324428366604).

Almost surely, 2^648856733207 is an apocalyptic number.

648856733207 is a deficient number, since it is larger than the sum of its proper divisors (1).

648856733207 is an equidigital number, since it uses as much as digits as its factorization.

648856733207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40642560, while the sum is 59.

The spelling of 648856733207 in words is "six hundred forty-eight billion, eight hundred fifty-six million, seven hundred thirty-three thousand, two hundred seven".