623329 has 6 divisors (see below), whose sum is σ = 725154. Its totient is φ = 534240.

The previous prime is 623327. The next prime is 623341. The reversal of 623329 is 923326.

It can be written as a sum of positive squares in only one way, i.e., 603729 + 19600 = 777^2 + 140^2 .

It is not a de Polignac number, because 623329 - 2¹ = 623327 is a prime.

It is a d-powerful number, because it can be written as 6² + 2⁵ + 3 + 3¹² + 2¹⁵ + 9⁵ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (623321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6312 + ... + 6409.

It is an arithmetic number, because the mean of its divisors is an integer number (120859).

2⁶²³³²⁹ is an apocalyptic number.

It is an amenable number.

623329 is a deficient number, since it is larger than the sum of its proper divisors (101825).

623329 is a wasteful number, since it uses less digits than its factorization.

623329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12735 (or 12728 counting only the distinct ones).

The product of its digits is 1944, while the sum is 25.

The square root of 623329 is about 789.5118745149. The cubic root of 623329 is about 85.4225327983.

The spelling of 623329 in words is "six hundred twenty-three thousand, three hundred twenty-nine".