648016 has 20 divisors (see below), whose sum is σ = 1271124. Its totient is φ = 320000.

The previous prime is 648007. The next prime is 648019. The reversal of 648016 is 610846.

It can be written as a sum of positive squares in 2 ways, for example, as 633616 + 14400 = 796^2 + 120^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648019) 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, 1416 + ... + 1816.

2⁶⁴⁸⁰¹⁶ is an apocalyptic number.

It is an amenable number.

648016 is a deficient number, since it is larger than the sum of its proper divisors (623108).

648016 is a wasteful number, since it uses less digits than its factorization.

648016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510 (or 504 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 648016 is about 804.9944099185. The cubic root of 648016 is about 86.5356864346.

The spelling of 648016 in words is "six hundred forty-eight thousand, sixteen".