667354 has 8 divisors (see below), whose sum is σ = 1006848. Its totient is φ = 331740.

The previous prime is 667351. The next prime is 667361. The reversal of 667354 is 453766.

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

It is a super-2 number, since 2×667354² = 890722722632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (667351) by changing a digit.

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, 492 + ... + 1255.

It is an arithmetic number, because the mean of its divisors is an integer number (125856).

2⁶⁶⁷³⁵⁴ is an apocalyptic number.

667354 is a deficient number, since it is larger than the sum of its proper divisors (339494).

667354 is a wasteful number, since it uses less digits than its factorization.

667354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1940.

The product of its digits is 15120, while the sum is 31.

The square root of 667354 is about 816.9173764831. The cubic root of 667354 is about 87.3880582106.

The spelling of 667354 in words is "six hundred sixty-seven thousand, three hundred fifty-four".