648386 has 8 divisors (see below), whose sum is σ = 986124. Its totient is φ = 319680.

The previous prime is 648383. The next prime is 648391. The reversal of 648386 is 683846.

It can be written as a sum of positive squares in 2 ways, for example, as 648025 + 361 = 805^2 + 19^2 .

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

It is not an unprimeable number, because it can be changed into a prime (648383) 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, 2075 + ... + 2366.

2⁶⁴⁸³⁸⁶ is an apocalyptic number.

648386 is a deficient number, since it is larger than the sum of its proper divisors (337738).

648386 is a wasteful number, since it uses less digits than its factorization.

648386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4516.

The product of its digits is 27648, while the sum is 35.

The square root of 648386 is about 805.2241923837. The cubic root of 648386 is about 86.5521531638.

The spelling of 648386 in words is "six hundred forty-eight thousand, three hundred eighty-six".