166443616 has 24 divisors (see below), whose sum is σ = 327983040. Its totient is φ = 83146368.

The previous prime is 166443601. The next prime is 166443623. The reversal of 166443616 is 616344661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54810 + ... + 57766.

It is an arithmetic number, because the mean of its divisors is an integer number (13665960).

Almost surely, 2^166443616 is an apocalyptic number.

166443616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

166443616 is a deficient number, since it is larger than the sum of its proper divisors (161539424).

166443616 is a wasteful number, since it uses less digits than its factorization.

166443616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4726 (or 4718 counting only the distinct ones).

The product of its digits is 62208, while the sum is 37.

The square root of 166443616 is about 12901.3028799420. The cubic root of 166443616 is about 550.0755995254.

The spelling of 166443616 in words is "one hundred sixty-six million, four hundred forty-three thousand, six hundred sixteen".