650345 has 4 divisors (see below), whose sum is σ = 780420. Its totient is φ = 520272.

The previous prime is 650329. The next prime is 650347. The reversal of 650345 is 543056.

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

It can be written as a sum of positive squares in 2 ways, for example, as 375769 + 274576 = 613^2 + 524^2 .

It is a cyclic number.

It is not a de Polignac number, because 650345 - 2⁴ = 650329 is a prime.

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

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 650345.

It is not an unprimeable number, because it can be changed into a prime (650347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65030 + ... + 65039.

It is an arithmetic number, because the mean of its divisors is an integer number (195105).

2⁶⁵⁰³⁴⁵ is an apocalyptic number.

It is an amenable number.

650345 is a deficient number, since it is larger than the sum of its proper divisors (130075).

650345 is a wasteful number, since it uses less digits than its factorization.

650345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130074.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 650345 is about 806.4397063637. The cubic root of 650345 is about 86.6392335922.

The spelling of 650345 in words is "six hundred fifty thousand, three hundred forty-five".