624623 has 4 divisors (see below), whose sum is σ = 627648. Its totient is φ = 621600.

The previous prime is 624607. The next prime is 624643. The reversal of 624623 is 326426.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 624623 - 2⁴ = 624607 is a prime.

It is a d-powerful number, because it can be written as 6 + 2¹⁵ + 6⁴ + 4⁸ + 2¹⁹ + 3⁶ .

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (624643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1178 + ... + 1623.

It is an arithmetic number, because the mean of its divisors is an integer number (156912).

2⁶²⁴⁶²³ is an apocalyptic number.

624623 is a deficient number, since it is larger than the sum of its proper divisors (3025).

624623 is a wasteful number, since it uses less digits than its factorization.

624623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3024.

The product of its digits is 1728, while the sum is 23.

The square root of 624623 is about 790.3309433396. The cubic root of 624623 is about 85.4816029180.

The spelling of 624623 in words is "six hundred twenty-four thousand, six hundred twenty-three".