648310511 has 2 divisors, whose sum is σ = 648310512. Its totient is φ = 648310510.

The previous prime is 648310477. The next prime is 648310519. The reversal of 648310511 is 115013846.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-648310511 is a prime.

It is a super-2 number, since 2×648310511² = 840613037346162242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (648310519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324155255 + 324155256.

It is an arithmetic number, because the mean of its divisors is an integer number (324155256).

Almost surely, 2^648310511 is an apocalyptic number.

648310511 is a deficient number, since it is larger than the sum of its proper divisors (1).

648310511 is an equidigital number, since it uses as much as digits as its factorization.

648310511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 648310511 is about 25461.9424043022. The cubic root of 648310511 is about 865.4879405930.

The spelling of 648310511 in words is "six hundred forty-eight million, three hundred ten thousand, five hundred eleven".