623039 has 4 divisors (see below), whose sum is σ = 624624. Its totient is φ = 621456.

The previous prime is 623023. The next prime is 623041. The reversal of 623039 is 930326.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 930326 = 2 ⋅465163.

It is a cyclic number.

It is not a de Polignac number, because 623039 - 2⁴ = 623023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 299 + ... + 1155.

It is an arithmetic number, because the mean of its divisors is an integer number (156156).

2⁶²³⁰³⁹ is an apocalyptic number.

623039 is a deficient number, since it is larger than the sum of its proper divisors (1585).

623039 is an equidigital number, since it uses as much as digits as its factorization.

623039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1584.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 623039 is about 789.3281953662. The cubic root of 623039 is about 85.4092833065.

The spelling of 623039 in words is "six hundred twenty-three thousand, thirty-nine".