667328 has 14 divisors (see below), whose sum is σ = 1324356. Its totient is φ = 333632.

The previous prime is 667321. The next prime is 667333. The reversal of 667328 is 823766.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 667294 and 667303.

It is not an unprimeable number, because it can be changed into a prime (667321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5150 + ... + 5277.

2⁶⁶⁷³²⁸ is an apocalyptic number.

It is an amenable number.

667328 is a deficient number, since it is larger than the sum of its proper divisors (657028).

667328 is a wasteful number, since it uses less digits than its factorization.

667328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10439 (or 10429 counting only the distinct ones).

The product of its digits is 12096, while the sum is 32.

The square root of 667328 is about 816.9014628460. The cubic root of 667328 is about 87.3869233212.

The spelling of 667328 in words is "six hundred sixty-seven thousand, three hundred twenty-eight".