623106 has 32 divisors (see below), whose sum is σ = 1512000. Its totient is φ = 188640.

The previous prime is 623071. The next prime is 623107. The reversal of 623106 is 601326.

It is a happy number.

It is a super-2 number, since 2×623106² = 776522174472, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 623106.

It is not an unprimeable number, because it can be changed into a prime (623107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70 + ... + 1118.

It is an arithmetic number, because the mean of its divisors is an integer number (47250).

2⁶²³¹⁰⁶ is an apocalyptic number.

623106 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 623106, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (756000).

623106 is an abundant number, since it is smaller than the sum of its proper divisors (888894).

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

623106 is a wasteful number, since it uses less digits than its factorization.

623106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071 (or 1065 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 623106 is about 789.3706353799. The cubic root of 623106 is about 85.4123447612.

It can be divided in two parts, 623 and 106, that added together give a 6-th power (729 = 3⁶).

The spelling of 623106 in words is "six hundred twenty-three thousand, one hundred six".