650816 has 14 divisors (see below), whose sum is σ = 1291590. Its totient is φ = 325376.

The previous prime is 650813. The next prime is 650821. The reversal of 650816 is 618056.

It can be written as a sum of positive squares in only one way, i.e., 640000 + 10816 = 800^2 + 104^2 .

It is a super-2 number, since 2×650816² = 847122931712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (650813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5021 + ... + 5148.

2⁶⁵⁰⁸¹⁶ is an apocalyptic number.

It is an amenable number.

650816 is a deficient number, since it is larger than the sum of its proper divisors (640774).

650816 is a wasteful number, since it uses less digits than its factorization.

650816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10181 (or 10171 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 650816 is about 806.7316778211. The cubic root of 650816 is about 86.6601441508.

Adding to 650816 its product of nonzero digits (1440), we get a palindrome (652256).

The spelling of 650816 in words is "six hundred fifty thousand, eight hundred sixteen".