648968 has 16 divisors (see below), whose sum is σ = 1270080. Its totient is φ = 310288.

The previous prime is 648961. The next prime is 648971. The reversal of 648968 is 869846.

It is not an unprimeable number, because it can be changed into a prime (648961) by changing a digit.

648968 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1580 + ... + 1947.

It is an arithmetic number, because the mean of its divisors is an integer number (79380).

2⁶⁴⁸⁹⁶⁸ is an apocalyptic number.

It is an amenable number.

648968 is a deficient number, since it is larger than the sum of its proper divisors (621112).

648968 is a wasteful number, since it uses less digits than its factorization.

648968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3556 (or 3552 counting only the distinct ones).

The product of its digits is 82944, while the sum is 41.

The square root of 648968 is about 805.5855013591. The cubic root of 648968 is about 86.5780422118.

It can be divided in two parts, 648 and 968, that multiplied together give a square (627264 = 792²).

The spelling of 648968 in words is "six hundred forty-eight thousand, nine hundred sixty-eight".