166406680 has 64 divisors (see below), whose sum is σ = 411713280. Its totient is φ = 60028800.

The previous prime is 166406629. The next prime is 166406687. The reversal of 166406680 is 86604661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166406687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56197 + ... + 59083.

It is an arithmetic number, because the mean of its divisors is an integer number (6433020).

Almost surely, 2^166406680 is an apocalyptic number.

166406680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166406680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205856640).

166406680 is an abundant number, since it is smaller than the sum of its proper divisors (245306600).

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

166406680 is a wasteful number, since it uses less digits than its factorization.

166406680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3040 (or 3036 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 166406680 is about 12899.8713171876. The cubic root of 166406680 is about 550.0349068754.

The spelling of 166406680 in words is "one hundred sixty-six million, four hundred six thousand, six hundred eighty".