166703856 has 80 divisors (see below), whose sum is σ = 473029248. Its totient is φ = 50169600.

The previous prime is 166703813. The next prime is 166703893. The reversal of 166703856 is 658307661.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81891 + ... + 83901.

Almost surely, 2^166703856 is an apocalyptic number.

166703856 is a gapful number since it is divisible by the number (16) 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 166703856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236514624).

166703856 is an abundant number, since it is smaller than the sum of its proper divisors (306325392).

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

166703856 is a wasteful number, since it uses less digits than its factorization.

166703856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2190 (or 2184 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 166703856 is about 12911.3847437058. The cubic root of 166703856 is about 550.3621372627.

The spelling of 166703856 in words is "one hundred sixty-six million, seven hundred three thousand, eight hundred fifty-six".