166696320 has 256 divisors, whose sum is σ = 618854400. Its totient is φ = 37380096.

The previous prime is 166696319. The next prime is 166696349. The reversal of 166696320 is 23696661.

It is a happy number.

166696320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 1061682 + ... + 1061838.

It is an arithmetic number, because the mean of its divisors is an integer number (2417400).

Almost surely, 2^166696320 is an apocalyptic number.

166696320 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 166696320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309427200).

166696320 is an abundant number, since it is smaller than the sum of its proper divisors (452158080).

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

166696320 is a wasteful number, since it uses less digits than its factorization.

166696320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 166696320 is about 12911.0929049403. The cubic root of 166696320 is about 550.3538439301.

The spelling of 166696320 in words is "one hundred sixty-six million, six hundred ninety-six thousand, three hundred twenty".