648166 has 16 divisors (see below), whose sum is σ = 1053360. Its totient is φ = 298080.

The previous prime is 648133. The next prime is 648173. The reversal of 648166 is 661846.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1176 + ... + 1636.

It is an arithmetic number, because the mean of its divisors is an integer number (65835).

2⁶⁴⁸¹⁶⁶ is an apocalyptic number.

648166 is a deficient number, since it is larger than the sum of its proper divisors (405194).

648166 is a wasteful number, since it uses less digits than its factorization.

648166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519.

The product of its digits is 6912, while the sum is 31.

The square root of 648166 is about 805.0875728764. The cubic root of 648166 is about 86.5423628909.

The spelling of 648166 in words is "six hundred forty-eight thousand, one hundred sixty-six".