654166 has 8 divisors (see below), whose sum is σ = 1023984. Its totient is φ = 312840.

The previous prime is 654163. The next prime is 654167. The reversal of 654166 is 661456.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654161) 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, 7065 + ... + 7156.

It is an arithmetic number, because the mean of its divisors is an integer number (127998).

2⁶⁵⁴¹⁶⁶ is an apocalyptic number.

654166 is a deficient number, since it is larger than the sum of its proper divisors (369818).

654166 is a wasteful number, since it uses less digits than its factorization.

654166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14246.

The product of its digits is 4320, while the sum is 28.

The square root of 654166 is about 808.8052917730. The cubic root of 654166 is about 86.8085807737.

It can be divided in two parts, 654 and 166, that added together give a triangular number (820 = T₄₀).

The spelling of 654166 in words is "six hundred fifty-four thousand, one hundred sixty-six".