648236 has 6 divisors (see below), whose sum is σ = 1134420. Its totient is φ = 324116.

The previous prime is 648229. The next prime is 648239. The reversal of 648236 is 632846.

It is a junction number, because it is equal to n+sod(n) for n = 648199 and 648208.

It is not an unprimeable number, because it can be changed into a prime (648239) by changing a digit.

648236 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81026 + ... + 81033.

It is an arithmetic number, because the mean of its divisors is an integer number (189070).

2⁶⁴⁸²³⁶ is an apocalyptic number.

It is an amenable number.

648236 is a deficient number, since it is larger than the sum of its proper divisors (486184).

648236 is a wasteful number, since it uses less digits than its factorization.

648236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162063 (or 162061 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 648236 is about 805.1310452343. The cubic root of 648236 is about 86.5454782180.

The spelling of 648236 in words is "six hundred forty-eight thousand, two hundred thirty-six".