166171560 has 64 divisors (see below), whose sum is σ = 500774400. Its totient is φ = 44111616.

The previous prime is 166171559. The next prime is 166171609. The reversal of 166171560 is 65171661.

It is a super-2 number, since 2×166171560² = 55225974705667200, which contains 22 as substring.

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, 24457 + ... + 30503.

It is an arithmetic number, because the mean of its divisors is an integer number (7824600).

Almost surely, 2^166171560 is an apocalyptic number.

166171560 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 166171560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250387200).

166171560 is an abundant number, since it is smaller than the sum of its proper divisors (334602840).

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

166171560 is a wasteful number, since it uses less digits than its factorization.

166171560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6290 (or 6286 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 166171560 is about 12890.7548266190. The cubic root of 166171560 is about 549.7757322566.

The spelling of 166171560 in words is "one hundred sixty-six million, one hundred seventy-one thousand, five hundred sixty".