649268 has 12 divisors (see below), whose sum is σ = 1196160. Its totient is φ = 307512.

The previous prime is 649261. The next prime is 649273. The reversal of 649268 is 862946.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649261) by changing a digit.

649268 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, 4196 + ... + 4347.

It is an arithmetic number, because the mean of its divisors is an integer number (99680).

2⁶⁴⁹²⁶⁸ is an apocalyptic number.

It is an amenable number.

649268 is a deficient number, since it is larger than the sum of its proper divisors (546892).

649268 is a wasteful number, since it uses less digits than its factorization.

649268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8566 (or 8564 counting only the distinct ones).

The product of its digits is 20736, while the sum is 35.

The square root of 649268 is about 805.7716798200. The cubic root of 649268 is about 86.5913810366.

The spelling of 649268 in words is "six hundred forty-nine thousand, two hundred sixty-eight".