672666 has 8 divisors (see below), whose sum is σ = 1345344. Its totient is φ = 224220.

The previous prime is 672653. The next prime is 672667. The reversal of 672666 is 666276.

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

672666 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (672667) by changing a digit.

672666 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56050 + ... + 56061.

It is an arithmetic number, because the mean of its divisors is an integer number (168168).

2⁶⁷²⁶⁶⁶ is an apocalyptic number.

672666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

672666 is a wasteful number, since it uses less digits than its factorization.

672666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112116.

The product of its digits is 18144, while the sum is 33.

The square root of 672666 is about 820.1621790841. The cubic root of 672666 is about 87.6193093524.

The spelling of 672666 in words is "six hundred seventy-two thousand, six hundred sixty-six".