166840860 has 48 divisors (see below), whose sum is σ = 478025856. Its totient is φ = 43455552.

The previous prime is 166840837. The next prime is 166840871. The reversal of 166840860 is 68048661.

166840860 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 15 ways as a sum of consecutive naturals, for example, 29754 + ... + 34913.

It is an arithmetic number, because the mean of its divisors is an integer number (9958872).

Almost surely, 2^166840860 is an apocalyptic number.

166840860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166840860 is an abundant number, since it is smaller than the sum of its proper divisors (311184996).

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

166840860 is a wasteful number, since it uses less digits than its factorization.

166840860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64722 (or 64720 counting only the distinct ones).

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

The square root of 166840860 is about 12916.6892042814. The cubic root of 166840860 is about 550.5128659649.

The spelling of 166840860 in words is "one hundred sixty-six million, eight hundred forty thousand, eight hundred sixty".