648262057 has 2 divisors, whose sum is σ = 648262058. Its totient is φ = 648262056.

The previous prime is 648262019. The next prime is 648262063. The reversal of 648262057 is 750262846.

648262057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 604225561 + 44036496 = 24581^2 + 6636^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-648262057 is a prime.

It is not a weakly prime, because it can be changed into another prime (648262757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324131028 + 324131029.

It is an arithmetic number, because the mean of its divisors is an integer number (324131029).

Almost surely, 2^648262057 is an apocalyptic number.

It is an amenable number.

648262057 is a deficient number, since it is larger than the sum of its proper divisors (1).

648262057 is an equidigital number, since it uses as much as digits as its factorization.

648262057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 648262057 is about 25460.9908880232. The cubic root of 648262057 is about 865.4663781900.

The spelling of 648262057 in words is "six hundred forty-eight million, two hundred sixty-two thousand, fifty-seven".