648366 has 8 divisors (see below), whose sum is σ = 1296744. Its totient is φ = 216120.

The previous prime is 648343. The next prime is 648371. The reversal of 648366 is 663846.

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

648366 is an admirable number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 648366.

It is an unprimeable number.

648366 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54025 + ... + 54036.

It is an arithmetic number, because the mean of its divisors is an integer number (162093).

2⁶⁴⁸³⁶⁶ is an apocalyptic number.

648366 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

648366 is a wasteful number, since it uses less digits than its factorization.

648366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108066.

The product of its digits is 20736, while the sum is 33.

The square root of 648366 is about 805.2117733864. The cubic root of 648366 is about 86.5512632306.

The spelling of 648366 in words is "six hundred forty-eight thousand, three hundred sixty-six".