166140660 has 96 divisors (see below), whose sum is σ = 562947840. Its totient is φ = 35739648.

The previous prime is 166140659. The next prime is 166140673. The reversal of 166140660 is 66041661.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4495 + ... + 18774.

It is an arithmetic number, because the mean of its divisors is an integer number (5864040).

Almost surely, 2^166140660 is an apocalyptic number.

166140660 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 166140660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281473920).

166140660 is an abundant number, since it is smaller than the sum of its proper divisors (396807180).

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

166140660 is a wasteful number, since it uses less digits than its factorization.

166140660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23305 (or 23303 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 166140660 is about 12889.5562375126. The cubic root of 166140660 is about 549.7416527722.

The spelling of 166140660 in words is "one hundred sixty-six million, one hundred forty thousand, six hundred sixty".