166286544 has 80 divisors (see below), whose sum is σ = 443543040. Its totient is φ = 53656960.

The previous prime is 166286543. The next prime is 166286557. The reversal of 166286544 is 445682661.

It is a junction number, because it is equal to n+sod(n) for n = 166286496 and 166286505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166286543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200659 + ... + 201485.

It is an arithmetic number, because the mean of its divisors is an integer number (5544288).

Almost surely, 2^166286544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166286544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221771520).

166286544 is an abundant number, since it is smaller than the sum of its proper divisors (277256496).

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

166286544 is a wasteful number, since it uses less digits than its factorization.

166286544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968 (or 962 counting only the distinct ones).

The product of its digits is 276480, while the sum is 42.

The square root of 166286544 is about 12895.2139958979. The cubic root of 166286544 is about 549.9025105444.

The spelling of 166286544 in words is "one hundred sixty-six million, two hundred eighty-six thousand, five hundred forty-four".