623500 has 48 divisors (see below), whose sum is σ = 1441440. Its totient is φ = 235200.

The previous prime is 623477. The next prime is 623521. The reversal of 623500 is 5326.

It is an unprimeable number.

623500 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14479 + ... + 14521.

It is an arithmetic number, because the mean of its divisors is an integer number (30030).

2⁶²³⁵⁰⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 623500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (720720).

623500 is an abundant number, since it is smaller than the sum of its proper divisors (817940).

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

623500 is a wasteful number, since it uses less digits than its factorization.

623500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91 (or 79 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 623500 is about 789.6201618500. The cubic root of 623500 is about 85.4303435037.

Adding to 623500 its reverse (5326), we get a palindrome (628826).

The spelling of 623500 in words is "six hundred twenty-three thousand, five hundred".