648499 has 8 divisors (see below), whose sum is σ = 705888. Its totient is φ = 593280.

The previous prime is 648481. The next prime is 648509. The reversal of 648499 is 994846.

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

It is a cyclic number.

It is not a de Polignac number, because 648499 - 2⁷ = 648371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648449) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 114 + ... + 1144.

It is an arithmetic number, because the mean of its divisors is an integer number (88236).

2⁶⁴⁸⁴⁹⁹ is an apocalyptic number.

648499 is a deficient number, since it is larger than the sum of its proper divisors (57389).

648499 is a wasteful number, since it uses less digits than its factorization.

648499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085.

The product of its digits is 62208, while the sum is 40.

The square root of 648499 is about 805.2943561208. The cubic root of 648499 is about 86.5571809432.

The spelling of 648499 in words is "six hundred forty-eight thousand, four hundred ninety-nine".