667254 has 16 divisors (see below), whose sum is σ = 1525248. Its totient is φ = 190632.

The previous prime is 667243. The next prime is 667273. The reversal of 667254 is 452766.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

667254 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 in 7 ways as a sum of consecutive naturals, for example, 7902 + ... + 7985.

It is an arithmetic number, because the mean of its divisors is an integer number (95328).

2⁶⁶⁷²⁵⁴ is an apocalyptic number.

667254 is an abundant number, since it is smaller than the sum of its proper divisors (857994).

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

667254 is a wasteful number, since it uses less digits than its factorization.

667254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15899.

The product of its digits is 10080, while the sum is 30.

The square root of 667254 is about 816.8561684899. The cubic root of 667254 is about 87.3836930899.

The spelling of 667254 in words is "six hundred sixty-seven thousand, two hundred fifty-four".