648106 has 4 divisors (see below), whose sum is σ = 972162. Its totient is φ = 324052.

The previous prime is 648101. The next prime is 648107. The reversal of 648106 is 601846.

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

It can be written as a sum of positive squares in only one way, i.e., 648025 + 81 = 805^2 + 9^2 .

It is not an unprimeable number, because it can be changed into a prime (648101) by changing a digit.

648106 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 as a sum of consecutive naturals, namely, 162025 + ... + 162028.

2⁶⁴⁸¹⁰⁶ is an apocalyptic number.

648106 is a deficient number, since it is larger than the sum of its proper divisors (324056).

648106 is a wasteful number, since it uses less digits than its factorization.

648106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324055.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 648106 is about 805.0503089870. The cubic root of 648106 is about 86.5396924320.

The spelling of 648106 in words is "six hundred forty-eight thousand, one hundred six".