166661244 has 36 divisors (see below), whose sum is σ = 426622560. Its totient is φ = 54849600.

The previous prime is 166661237. The next prime is 166661273. The reversal of 166661244 is 442166661.

166661244 is digitally balanced in base 3, 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 (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 166661199 and 166661208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26457 + ... + 32144.

Almost surely, 2^166661244 is an apocalyptic number.

It is an amenable number.

166661244 is an abundant number, since it is smaller than the sum of its proper divisors (259961316).

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

166661244 is a wasteful number, since it uses less digits than its factorization.

166661244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58690 (or 58685 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 166661244 is about 12909.7344666728. The cubic root of 166661244 is about 550.3152396674.

The spelling of 166661244 in words is "one hundred sixty-six million, six hundred sixty-one thousand, two hundred forty-four".