166663332 has 120 divisors (see below), whose sum is σ = 481041792. Its totient is φ = 49896000.

The previous prime is 166663331. The next prime is 166663337. The reversal of 166663332 is 233366661.

It is a happy number.

166663332 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is not an unprimeable number, because it can be changed into a prime (166663331) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 359733 + ... + 360195.

Almost surely, 2^166663332 is an apocalyptic number.

166663332 is a gapful number since it is divisible by the number (12) 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 166663332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240520896).

166663332 is an abundant number, since it is smaller than the sum of its proper divisors (314378460).

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

166663332 is a wasteful number, since it uses less digits than its factorization.

166663332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591 (or 580 counting only the distinct ones).

The product of its digits is 69984, while the sum is 36.

The square root of 166663332 is about 12909.8153356274. The cubic root of 166663332 is about 550.3175378490.

The spelling of 166663332 in words is "one hundred sixty-six million, six hundred sixty-three thousand, three hundred thirty-two".