648895453 has 2 divisors, whose sum is σ = 648895454. Its totient is φ = 648895452.

The previous prime is 648895409. The next prime is 648895463. The reversal of 648895453 is 354598846.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 417916249 + 230979204 = 20443^2 + 15198^2 .

It is a cyclic number.

It is not a de Polignac number, because 648895453 - 2⁹ = 648894941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 648895453.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (648895463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324447726 + 324447727.

It is an arithmetic number, because the mean of its divisors is an integer number (324447727).

Almost surely, 2^648895453 is an apocalyptic number.

It is an amenable number.

648895453 is a deficient number, since it is larger than the sum of its proper divisors (1).

648895453 is an equidigital number, since it uses as much as digits as its factorization.

648895453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4147200, while the sum is 52.

The square root of 648895453 is about 25473.4264087107. The cubic root of 648895453 is about 865.7481595549.

The spelling of 648895453 in words is "six hundred forty-eight million, eight hundred ninety-five thousand, four hundred fifty-three".