666334 has 8 divisors (see below), whose sum is σ = 1003608. Its totient is φ = 331800.

The previous prime is 666329. The next prime is 666353. The reversal of 666334 is 433666.

666334 = T₆₆₅ + T₆₆₆ + T₆₆₇.

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

It is a congruent number.

It is an unprimeable 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, 109 + ... + 1159.

It is an arithmetic number, because the mean of its divisors is an integer number (125451).

2⁶⁶⁶³³⁴ is an apocalyptic number.

666334 is the 667-th centered triangular number.

666334 is a deficient number, since it is larger than the sum of its proper divisors (337274).

666334 is a wasteful number, since it uses less digits than its factorization.

666334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370.

The product of its digits is 7776, while the sum is 28.

The square root of 666334 is about 816.2928396109. The cubic root of 666334 is about 87.3435135010.

It can be divided in two parts, 666 and 334, that added together give a cube (1000 = 10³).

The spelling of 666334 in words is "six hundred sixty-six thousand, three hundred thirty-four".