648607 has 2 divisors, whose sum is σ = 648608. Its totient is φ = 648606.

The previous prime is 648563. The next prime is 648617. The reversal of 648607 is 706846.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-648607 is a prime.

648607 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (648617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324303 + 324304.

It is an arithmetic number, because the mean of its divisors is an integer number (324304).

2⁶⁴⁸⁶⁰⁷ is an apocalyptic number.

648607 is a deficient number, since it is larger than the sum of its proper divisors (1).

648607 is an equidigital number, since it uses as much as digits as its factorization.

648607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 648607 is about 805.3614095547. The cubic root of 648607 is about 86.5619857086.

The spelling of 648607 in words is "six hundred forty-eight thousand, six hundred seven".