650880 has 96 divisors (see below), whose sum is σ = 2267460. Its totient is φ = 172032.

The previous prime is 650873. The next prime is 650911. The reversal of 650880 is 88056.

650880 is a `hidden beast` number, since 650 + 8 + 8 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 553536 + 97344 = 744^2 + 312^2 .

It is a tau number, because it is divible by the number of its divisors (96).

It is a nialpdrome in base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 650880.

It is an unprimeable number.

650880 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 in 11 ways as a sum of consecutive naturals, for example, 5704 + ... + 5816.

2⁶⁵⁰⁸⁸⁰ is an apocalyptic number.

650880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 650880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1133730).

650880 is an abundant number, since it is smaller than the sum of its proper divisors (1616580).

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

650880 is a wasteful number, since it uses less digits than its factorization.

650880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 650880 is about 806.7713430706. The cubic root of 650880 is about 86.6629847219.

The spelling of 650880 in words is "six hundred fifty thousand, eight hundred eighty".