650768 has 20 divisors (see below), whose sum is σ = 1277820. Its totient is φ = 321024.

The previous prime is 650761. The next prime is 650779. The reversal of 650768 is 867056.

Added to its reverse (867056) it gives a square (1517824 = 1232²).

It can be written as a sum of positive squares in 2 ways, for example, as 350464 + 300304 = 592^2 + 548^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (650761) 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, 1196 + ... + 1652.

It is an arithmetic number, because the mean of its divisors is an integer number (63891).

2⁶⁵⁰⁷⁶⁸ is an apocalyptic number.

It is an amenable number.

650768 is a deficient number, since it is larger than the sum of its proper divisors (627052).

650768 is a wasteful number, since it uses less digits than its factorization.

650768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554 (or 548 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 650768 is about 806.7019276040. The cubic root of 650768 is about 86.6580136002.

Adding to 650768 its reverse (867056), we get a square (1517824 = 1232²).

The spelling of 650768 in words is "six hundred fifty thousand, seven hundred sixty-eight".