648842353 has 2 divisors, whose sum is σ = 648842354. Its totient is φ = 648842352.

The previous prime is 648842339. The next prime is 648842357. The reversal of 648842353 is 353248846.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 368179344 + 280663009 = 19188^2 + 16753^2 .

It is a cyclic number.

It is not a de Polignac number, because 648842353 - 2⁹ = 648841841 is a prime.

It is not a weakly prime, because it can be changed into another prime (648842357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324421176 + 324421177.

It is an arithmetic number, because the mean of its divisors is an integer number (324421177).

Almost surely, 2^648842353 is an apocalyptic number.

It is an amenable number.

648842353 is a deficient number, since it is larger than the sum of its proper divisors (1).

648842353 is an equidigital number, since it uses as much as digits as its factorization.

648842353 is an evil number, because the sum of its binary digits is even.

The product of its digits is 552960, while the sum is 43.

The square root of 648842353 is about 25472.3841247732. The cubic root of 648842353 is about 865.7245437931.

It can be divided in two parts, 6488 and 42353, that added together give a square (48841 = 221²).

The spelling of 648842353 in words is "six hundred forty-eight million, eight hundred forty-two thousand, three hundred fifty-three".