166625744 has 40 divisors (see below), whose sum is σ = 350810880. Its totient is φ = 76377600.

The previous prime is 166625743. The next prime is 166625747. The reversal of 166625744 is 447526661.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166625743) 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 7 ways as a sum of consecutive naturals, for example, 584 + ... + 18264.

It is an arithmetic number, because the mean of its divisors is an integer number (8770272).

Almost surely, 2^166625744 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 166625744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175405440).

166625744 is an abundant number, since it is smaller than the sum of its proper divisors (184185136).

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

166625744 is a wasteful number, since it uses less digits than its factorization.

166625744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17739 (or 17733 counting only the distinct ones).

The product of its digits is 241920, while the sum is 41.

The square root of 166625744 is about 12908.3594619921. The cubic root of 166625744 is about 550.2761632395.

The spelling of 166625744 in words is "one hundred sixty-six million, six hundred twenty-five thousand, seven hundred forty-four".