650920 has 16 divisors (see below), whose sum is σ = 1464660. Its totient is φ = 260352.

The previous prime is 650917. The next prime is 650927. The reversal of 650920 is 29056.

It can be written as a sum of positive squares in 2 ways, for example, as 617796 + 33124 = 786^2 + 182^2 .

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 650891 and 650900.

It is not an unprimeable number, because it can be changed into a prime (650927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8097 + ... + 8176.

2⁶⁵⁰⁹²⁰ is an apocalyptic number.

It is an amenable number.

650920 is an abundant number, since it is smaller than the sum of its proper divisors (813740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

650920 is a wasteful number, since it uses less digits than its factorization.

650920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16284 (or 16280 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 650920 is about 806.7961328613. The cubic root of 650920 is about 86.6647599844.

Adding to 650920 its reverse (29056), we get a palindrome (679976).

The spelling of 650920 in words is "six hundred fifty thousand, nine hundred twenty".