166085760 has 128 divisors (see below), whose sum is σ = 552562560. Its totient is φ = 42352640.

The previous prime is 166085741. The next prime is 166085761. The reversal of 166085760 is 67580661.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (166085761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42280 + ... + 46040.

It is an arithmetic number, because the mean of its divisors is an integer number (4316895).

Almost surely, 2^166085760 is an apocalyptic number.

166085760 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 166085760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276281280).

166085760 is an abundant number, since it is smaller than the sum of its proper divisors (386476800).

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

166085760 is a wasteful number, since it uses less digits than its factorization.

166085760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3806 (or 3794 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 166085760 is about 12887.4264304399. The cubic root of 166085760 is about 549.6810933609.

The spelling of 166085760 in words is "one hundred sixty-six million, eighty-five thousand, seven hundred sixty".