166666332 has 24 divisors (see below), whose sum is σ = 444443776. Its totient is φ = 47618928.

The previous prime is 166666301. The next prime is 166666399. The reversal of 166666332 is 233666661.

It is a happy number.

166666332 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 991978 + ... + 992145.

Almost surely, 2^166666332 is an apocalyptic number.

166666332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166666332 is an abundant number, since it is smaller than the sum of its proper divisors (277777444).

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

166666332 is a wasteful number, since it uses less digits than its factorization.

166666332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984137 (or 1984135 counting only the distinct ones).

The product of its digits is 139968, while the sum is 39.

The square root of 166666332 is about 12909.9315257673. The cubic root of 166666332 is about 550.3208398005.

The spelling of 166666332 in words is "one hundred sixty-six million, six hundred sixty-six thousand, three hundred thirty-two".