166544 has 20 divisors (see below), whose sum is σ = 369024. Its totient is φ = 71328.

The previous prime is 166541. The next prime is 166561. The reversal of 166544 is 445661.

It is a happy number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 166544.

It is not an unprimeable number, because it can be changed into a prime (166541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 632 + ... + 855.

2¹⁶⁶⁵⁴⁴ is an apocalyptic number.

166544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

166544 is an abundant number, since it is smaller than the sum of its proper divisors (202480).

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

166544 is a wasteful number, since it uses less digits than its factorization.

166544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1502 (or 1496 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 166544 is about 408.0980274395. The cubic root of 166544 is about 55.0186162876.

The spelling of 166544 in words is "one hundred sixty-six thousand, five hundred forty-four".