166665096 has 72 divisors (see below), whose sum is σ = 488813130. Its totient is φ = 51277824.

The previous prime is 166665091. The next prime is 166665097. The reversal of 166665096 is 690566661.

It can be written as a sum of positive squares in 3 ways, for example, as 34644996 + 132020100 = 5886^2 + 11490^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (166665091) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5320 + ... + 19016.

Almost surely, 2^166665096 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166665096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244406565).

166665096 is an abundant number, since it is smaller than the sum of its proper divisors (322148034).

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

166665096 is a wasteful number, since it uses less digits than its factorization.

166665096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13735 (or 13715 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 166665096 is about 12909.8836555563. The cubic root of 166665096 is about 550.3194794013.

The spelling of 166665096 in words is "one hundred sixty-six million, six hundred sixty-five thousand, ninety-six".