650653 has 4 divisors (see below), whose sum is σ = 654588. Its totient is φ = 646720.

The previous prime is 650627. The next prime is 650669. The reversal of 650653 is 356056.

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 459684 + 190969 = 678^2 + 437^2 .

It is a cyclic number.

It is not a de Polignac number, because 650653 - 2¹⁷ = 519581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650623) 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, 1708 + ... + 2053.

It is an arithmetic number, because the mean of its divisors is an integer number (163647).

2⁶⁵⁰⁶⁵³ is an apocalyptic number.

It is an amenable number.

650653 is a deficient number, since it is larger than the sum of its proper divisors (3935).

650653 is a wasteful number, since it uses less digits than its factorization.

650653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3934.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 650653 is about 806.6306465787. The cubic root of 650653 is about 86.6529087300.

The spelling of 650653 in words is "six hundred fifty thousand, six hundred fifty-three".