326663 has 2 divisors, whose sum is σ = 326664. Its totient is φ = 326662.

The previous prime is 326659. The next prime is 326681. The reversal of 326663 is 366623.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 326663 - 2² = 326659 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (326633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163331 + 163332.

It is an arithmetic number, because the mean of its divisors is an integer number (163332).

2³²⁶⁶⁶³ is an apocalyptic number.

326663 is a deficient number, since it is larger than the sum of its proper divisors (1).

326663 is an equidigital number, since it uses as much as digits as its factorization.

326663 is an evil number, because the sum of its binary digits is even.

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

The square root of 326663 is about 571.5443989753. The cubic root of 326663 is about 68.8705125957.

It can be divided in two parts, 326 and 663, that added together give a palindrome (989).

The spelling of 326663 in words is "three hundred twenty-six thousand, six hundred sixty-three".