166168340 has 96 divisors (see below), whose sum is σ = 391184640. Its totient is φ = 58899456.

The previous prime is 166168337. The next prime is 166168349. The reversal of 166168340 is 43861661.

166168340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×166168340² = 55223834436711200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 166168340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166168349) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 994937 + ... + 995103.

It is an arithmetic number, because the mean of its divisors is an integer number (4074840).

Almost surely, 2^166168340 is an apocalyptic number.

166168340 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 166168340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195592320).

166168340 is an abundant number, since it is smaller than the sum of its proper divisors (225016300).

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

166168340 is a wasteful number, since it uses less digits than its factorization.

166168340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 166168340 is about 12890.6299303021. The cubic root of 166168340 is about 549.7721811289.

The spelling of 166168340 in words is "one hundred sixty-six million, one hundred sixty-eight thousand, three hundred forty".