166068840 has 192 divisors, whose sum is σ = 590319360. Its totient is φ = 37255680.

The previous prime is 166068751. The next prime is 166068853. The reversal of 166068840 is 48860661.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 358449 + ... + 358911.

It is an arithmetic number, because the mean of its divisors is an integer number (3074580).

Almost surely, 2^166068840 is an apocalyptic number.

166068840 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 166068840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295159680).

166068840 is an abundant number, since it is smaller than the sum of its proper divisors (424250520).

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

166068840 is a wasteful number, since it uses less digits than its factorization.

166068840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552 (or 541 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 166068840 is about 12886.7699599240. The cubic root of 166068840 is about 549.6624264587.

It can be divided in two parts, 1660 and 68840, that added together give a triangular number (70500 = T₃₇₅).

The spelling of 166068840 in words is "one hundred sixty-six million, sixty-eight thousand, eight hundred forty".