667323 has 12 divisors (see below), whose sum is σ = 982800. Its totient is φ = 436176.

The previous prime is 667321. The next prime is 667333. The reversal of 667323 is 323766.

It is not a de Polignac number, because 667323 - 2¹ = 667321 is a prime.

It is a d-powerful number, because it can be written as 6 + 6³ + 3⁷ + 7⁴ + 2¹⁷ + 3¹² .

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 in 11 ways as a sum of consecutive naturals, for example, 223 + ... + 1176.

It is an arithmetic number, because the mean of its divisors is an integer number (81900).

2⁶⁶⁷³²³ is an apocalyptic number.

667323 is a deficient number, since it is larger than the sum of its proper divisors (315477).

667323 is a wasteful number, since it uses less digits than its factorization.

667323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1458 (or 1455 counting only the distinct ones).

The product of its digits is 4536, while the sum is 27.

The square root of 667323 is about 816.8984024957. The cubic root of 667323 is about 87.3867050698.

It can be divided in two parts, 667 and 323, that added together give a triangular number (990 = T₄₄).

The spelling of 667323 in words is "six hundred sixty-seven thousand, three hundred twenty-three".