623898 has 48 divisors (see below), whose sum is σ = 1550016. Its totient is φ = 179520.

The previous prime is 623893. The next prime is 623923. The reversal of 623898 is 898326.

It is a d-powerful number, because it can be written as 6⁵ + 2¹⁹ + 8 + 3¹⁰ + 9 + 8⁵ .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (623893) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4486 + ... + 4622.

It is an arithmetic number, because the mean of its divisors is an integer number (32292).

2⁶²³⁸⁹⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 623898, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (775008).

623898 is an abundant number, since it is smaller than the sum of its proper divisors (926118).

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

623898 is a wasteful number, since it uses less digits than its factorization.

623898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 176 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 623898 is about 789.8721415520. The cubic root of 623898 is about 85.4485172778.

It can be divided in two parts, 6238 and 98, that added together give a palindrome (6336).

The spelling of 623898 in words is "six hundred twenty-three thousand, eight hundred ninety-eight".