650642 has 8 divisors (see below), whose sum is σ = 985932. Its totient is φ = 322000.

The previous prime is 650627. The next prime is 650669. The reversal of 650642 is 246056.

It can be written as a sum of positive squares in 2 ways, for example, as 534361 + 116281 = 731^2 + 341^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 15.

It is an unprimeable number.

650642 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 1409 + ... + 1812.

2⁶⁵⁰⁶⁴² is an apocalyptic number.

650642 is a deficient number, since it is larger than the sum of its proper divisors (335290).

650642 is a wasteful number, since it uses less digits than its factorization.

650642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3324.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 650642 is about 806.6238280636. The cubic root of 650642 is about 86.6524204065.

Adding to 650642 its reverse (246056), we get a palindrome (896698).

The spelling of 650642 in words is "six hundred fifty thousand, six hundred forty-two".