648079 has 2 divisors, whose sum is σ = 648080. Its totient is φ = 648078.

The previous prime is 648073. The next prime is 648097. The reversal of 648079 is 970846.

Together with next prime (648097) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 648079 - 2⁵ = 648047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (648073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324039 + 324040.

It is an arithmetic number, because the mean of its divisors is an integer number (324040).

2⁶⁴⁸⁰⁷⁹ is an apocalyptic number.

648079 is a deficient number, since it is larger than the sum of its proper divisors (1).

648079 is an equidigital number, since it uses as much as digits as its factorization.

648079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 648079 is about 805.0335396740. The cubic root of 648079 is about 86.5384906717.

The spelling of 648079 in words is "six hundred forty-eight thousand, seventy-nine".