648349 has 8 divisors (see below), whose sum is σ = 712152. Its totient is φ = 586560.

The previous prime is 648343. The next prime is 648371. The reversal of 648349 is 943846.

It can be written as a sum of positive squares in 4 ways, for example, as 85849 + 562500 = 293^2 + 750^2 .

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

It is not a de Polignac number, because 648349 - 2³ = 648341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648341) 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, 219 + ... + 1159.

It is an arithmetic number, because the mean of its divisors is an integer number (89019).

2⁶⁴⁸³⁴⁹ is an apocalyptic number.

It is an amenable number.

648349 is a deficient number, since it is larger than the sum of its proper divisors (63803).

648349 is a wasteful number, since it uses less digits than its factorization.

648349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007.

The product of its digits is 20736, while the sum is 34.

The square root of 648349 is about 805.2012170880. The cubic root of 648349 is about 86.5505067729.

The spelling of 648349 in words is "six hundred forty-eight thousand, three hundred forty-nine".