650489 has 4 divisors (see below), whose sum is σ = 743424. Its totient is φ = 557556.

The previous prime is 650483. The next prime is 650519. The reversal of 650489 is 984056.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-650489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (650483) 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 in 3 ways as a sum of consecutive naturals, for example, 46457 + ... + 46470.

It is an arithmetic number, because the mean of its divisors is an integer number (185856).

2⁶⁵⁰⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

650489 is a deficient number, since it is larger than the sum of its proper divisors (92935).

650489 is an equidigital number, since it uses as much as digits as its factorization.

650489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92934.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 650489 is about 806.5289827402. The cubic root of 650489 is about 86.6456277004.

The spelling of 650489 in words is "six hundred fifty thousand, four hundred eighty-nine".