623598 has 24 divisors (see below), whose sum is σ = 1305528. Its totient is φ = 198432.

The previous prime is 623591. The next prime is 623617. The reversal of 623598 is 895326.

It is a happy 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 (623591) 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 11 ways as a sum of consecutive naturals, for example, 11740 + ... + 11792.

It is an arithmetic number, because the mean of its divisors is an integer number (54397).

2⁶²³⁵⁹⁸ is an apocalyptic number.

623598 is an abundant number, since it is smaller than the sum of its proper divisors (681930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

623598 is a wasteful number, since it uses less digits than its factorization.

623598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148 (or 95 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 623598 is about 789.6822145648. The cubic root of 623598 is about 85.4348191706.

It can be divided in two parts, 623 and 598, that added together give a palindrome (1221).

The spelling of 623598 in words is "six hundred twenty-three thousand, five hundred ninety-eight".