650980 has 36 divisors (see below), whose sum is σ = 1508220. Its totient is φ = 235840.

The previous prime is 650971. The next prime is 650987. The reversal of 650980 is 89056.

It can be written as a sum of positive squares in 2 ways, for example, as 123904 + 527076 = 352^2 + 726^2 .

It is not an unprimeable number, because it can be changed into a prime (650987) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2286 + ... + 2554.

It is an arithmetic number, because the mean of its divisors is an integer number (41895).

2⁶⁵⁰⁹⁸⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 650980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (754110).

650980 is an abundant number, since it is smaller than the sum of its proper divisors (857240).

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

650980 is a wasteful number, since it uses less digits than its factorization.

650980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 650980 is about 806.8333161193. The cubic root of 650980 is about 86.6674227416.

The spelling of 650980 in words is "six hundred fifty thousand, nine hundred eighty".