650939 has 4 divisors (see below), whose sum is σ = 656040. Its totient is φ = 645840.

The previous prime is 650933. The next prime is 650953. The reversal of 650939 is 939056.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 650939 - 2¹² = 646843 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 650939.

It is not an unprimeable number, because it can be changed into a prime (650933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2354 + ... + 2615.

It is an arithmetic number, because the mean of its divisors is an integer number (164010).

2⁶⁵⁰⁹³⁹ is an apocalyptic number.

650939 is a deficient number, since it is larger than the sum of its proper divisors (5101).

650939 is a wasteful number, since it uses less digits than its factorization.

650939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5100.

The product of its (nonzero) digits is 7290, while the sum is 32.

The square root of 650939 is about 806.8079077451. The cubic root of 650939 is about 86.6656032085.

The spelling of 650939 in words is "six hundred fifty thousand, nine hundred thirty-nine".