166634544 has 80 divisors (see below), whose sum is σ = 464514912. Its totient is φ = 51277824.

The previous prime is 166634543. The next prime is 166634549. The reversal of 166634544 is 445436661.

It is not an unprimeable number, because it can be changed into a prime (166634543) 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, 41322 + ... + 45174.

Almost surely, 2^166634544 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 166634544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232257456).

166634544 is an abundant number, since it is smaller than the sum of its proper divisors (297880368).

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

166634544 is a wasteful number, since it uses less digits than its factorization.

166634544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3934 (or 3928 counting only the distinct ones).

The product of its digits is 207360, while the sum is 39.

The square root of 166634544 is about 12908.7003218759. The cubic root of 166634544 is about 550.2858503080.

The spelling of 166634544 in words is "one hundred sixty-six million, six hundred thirty-four thousand, five hundred forty-four".