623166 has 16 divisors (see below), whose sum is σ = 1254144. Its totient is φ = 206424.

The previous prime is 623107. The next prime is 623171. The reversal of 623166 is 661326.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

623166 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 7 ways as a sum of consecutive naturals, for example, 1515 + ... + 1881.

It is an arithmetic number, because the mean of its divisors is an integer number (78384).

2⁶²³¹⁶⁶ is an apocalyptic number.

623166 is an abundant number, since it is smaller than the sum of its proper divisors (630978).

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

623166 is a wasteful number, since it uses less digits than its factorization.

623166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655.

The product of its digits is 1296, while the sum is 24.

The square root of 623166 is about 789.4086394257. The cubic root of 623166 is about 85.4150861761.

The spelling of 623166 in words is "six hundred twenty-three thousand, one hundred sixty-six".