648082663 has 2 divisors, whose sum is σ = 648082664. Its totient is φ = 648082662.

The previous prime is 648082657. The next prime is 648082693. The reversal of 648082663 is 366280846.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-648082663 is a prime.

It is a super-2 number, since 2×648082663² = 840022276162343138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (648082693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324041331 + 324041332.

It is an arithmetic number, because the mean of its divisors is an integer number (324041332).

Almost surely, 2^648082663 is an apocalyptic number.

648082663 is a deficient number, since it is larger than the sum of its proper divisors (1).

648082663 is an equidigital number, since it uses as much as digits as its factorization.

648082663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 331776, while the sum is 43.

The square root of 648082663 is about 25457.4677256007. The cubic root of 648082663 is about 865.3865371249.

The spelling of 648082663 in words is "six hundred forty-eight million, eighty-two thousand, six hundred sixty-three".