323666 has 16 divisors (see below), whose sum is σ = 565440. Its totient is φ = 136080.

The previous prime is 323651. The next prime is 323699. The reversal of 323666 is 666323.

323666 = T₇₁ + T₇₂ + ... + T₁₃₁.

323666 = 114² + 115² + ... + 134².

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

323666 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 in 7 ways as a sum of consecutive naturals, for example, 665 + ... + 1043.

It is an arithmetic number, because the mean of its divisors is an integer number (35340).

2³²³⁶⁶⁶ is an apocalyptic number.

323666 is a deficient number, since it is larger than the sum of its proper divisors (241774).

323666 is a wasteful number, since it uses less digits than its factorization.

323666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449.

The product of its digits is 3888, while the sum is 26.

The square root of 323666 is about 568.9165140862. The cubic root of 323666 is about 68.6592455402.

Adding to 323666 its reverse (666323), we get a palindrome (989989).

It can be divided in two parts, 323 and 666, that added together give a palindrome (989).

The spelling of 323666 in words is "three hundred twenty-three thousand, six hundred sixty-six".