648514043 has 2 divisors, whose sum is σ = 648514044. Its totient is φ = 648514042.

The previous prime is 648514039. The next prime is 648514051. The reversal of 648514043 is 340415846.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 648514043 - 2² = 648514039 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 648513994 and 648514012.

It is not a weakly prime, because it can be changed into another prime (648514033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324257021 + 324257022.

It is an arithmetic number, because the mean of its divisors is an integer number (324257022).

Almost surely, 2^648514043 is an apocalyptic number.

648514043 is a deficient number, since it is larger than the sum of its proper divisors (1).

648514043 is an equidigital number, since it uses as much as digits as its factorization.

648514043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 648514043 is about 25465.9388792167. The cubic root of 648514043 is about 865.5785021668.

Adding to 648514043 its reverse (340415846), we get a palindrome (988929889).

The spelling of 648514043 in words is "six hundred forty-eight million, five hundred fourteen thousand, forty-three".