650189 has 2 divisors, whose sum is σ = 650190. Its totient is φ = 650188.

The previous prime is 650183. The next prime is 650213. The reversal of 650189 is 981056.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 574564 + 75625 = 758^2 + 275^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-650189 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (650183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325094 + 325095.

It is an arithmetic number, because the mean of its divisors is an integer number (325095).

2⁶⁵⁰¹⁸⁹ is an apocalyptic number.

It is an amenable number.

650189 is a deficient number, since it is larger than the sum of its proper divisors (1).

650189 is an equidigital number, since it uses as much as digits as its factorization.

650189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 650189 is about 806.3429791348. The cubic root of 650189 is about 86.6323055764.

The spelling of 650189 in words is "six hundred fifty thousand, one hundred eighty-nine".