648266 has 8 divisors (see below), whose sum is σ = 1006020. Its totient is φ = 312928.

The previous prime is 648259. The next prime is 648269. The reversal of 648266 is 662846.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 616225 + 32041 = 785^2 + 179^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (648269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5531 + ... + 5646.

2⁶⁴⁸²⁶⁶ is an apocalyptic number.

648266 is a deficient number, since it is larger than the sum of its proper divisors (357754).

648266 is a wasteful number, since it uses less digits than its factorization.

648266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11208.

The product of its digits is 13824, while the sum is 32.

The square root of 648266 is about 805.1496755262. The cubic root of 648266 is about 86.5468132896.

The spelling of 648266 in words is "six hundred forty-eight thousand, two hundred sixty-six".