650105 has 4 divisors (see below), whose sum is σ = 780132. Its totient is φ = 520080.

The previous prime is 650099. The next prime is 650107. The reversal of 650105 is 501056.

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 90601 + 559504 = 301^2 + 748^2 .

It is not a de Polignac number, because 650105 - 2⁸ = 649849 is a prime.

It is a super-2 number, since 2×650105² = 845273022050, which contains 22 as substring.

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

It is a Duffinian number.

It is a nialpdrome in base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 650105.

It is not an unprimeable number, because it can be changed into a prime (650107) 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, 65006 + ... + 65015.

It is an arithmetic number, because the mean of its divisors is an integer number (195033).

2⁶⁵⁰¹⁰⁵ is an apocalyptic number.

It is an amenable number.

650105 is a deficient number, since it is larger than the sum of its proper divisors (130027).

650105 is a wasteful number, since it uses less digits than its factorization.

650105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130026.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 650105 is about 806.2908904360. The cubic root of 650105 is about 86.6285746474.

The spelling of 650105 in words is "six hundred fifty thousand, one hundred five".