667346 has 4 divisors (see below), whose sum is σ = 1001022. Its totient is φ = 333672.

The previous prime is 667333. The next prime is 667351. The reversal of 667346 is 643766.

667346 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 648025 + 19321 = 805^2 + 139^2 .

It is an unprimeable number.

667346 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 as a sum of consecutive naturals, namely, 166835 + ... + 166838.

2⁶⁶⁷³⁴⁶ is an apocalyptic number.

667346 is a deficient number, since it is larger than the sum of its proper divisors (333676).

667346 is a wasteful number, since it uses less digits than its factorization.

667346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333675.

The product of its digits is 18144, while the sum is 32.

The square root of 667346 is about 816.9124800124. The cubic root of 667346 is about 87.3877090170.

The spelling of 667346 in words is "six hundred sixty-seven thousand, three hundred forty-six".