648268671 has 16 divisors (see below), whose sum is σ = 893581920. Its totient is φ = 417761280.

The previous prime is 648268669. The next prime is 648268679. The reversal of 648268671 is 176862846.

It is not a de Polignac number, because 648268671 - 2¹ = 648268669 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 648268671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648268679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10770 + ... + 37583.

It is an arithmetic number, because the mean of its divisors is an integer number (55848870).

Almost surely, 2^648268671 is an apocalyptic number.

648268671 is a deficient number, since it is larger than the sum of its proper divisors (245313249).

648268671 is a wasteful number, since it uses less digits than its factorization.

648268671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48506.

The product of its digits is 774144, while the sum is 48.

The square root of 648268671 is about 25461.1207726604. The cubic root of 648268671 is about 865.4693215343.

The spelling of 648268671 in words is "six hundred forty-eight million, two hundred sixty-eight thousand, six hundred seventy-one".