166940544 has 128 divisors (see below), whose sum is σ = 475891200. Its totient is φ = 51666944.

The previous prime is 166940533. The next prime is 166940573. The reversal of 166940544 is 445049661.

166940544 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 698377 + ... + 698615.

It is an arithmetic number, because the mean of its divisors is an integer number (3717900).

Almost surely, 2^166940544 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 166940544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237945600).

166940544 is an abundant number, since it is smaller than the sum of its proper divisors (308950656).

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

166940544 is a wasteful number, since it uses less digits than its factorization.

166940544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380 (or 368 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 166940544 is about 12920.5473568266. The cubic root of 166940544 is about 550.6224841939.

The spelling of 166940544 in words is "one hundred sixty-six million, nine hundred forty thousand, five hundred forty-four".