166605241 has 8 divisors (see below), whose sum is σ = 183794400. Its totient is φ = 149756640.

The previous prime is 166605239. The next prime is 166605259. The reversal of 166605241 is 142506661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 166605241 - 2¹ = 166605239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166305241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84111 + ... + 86068.

It is an arithmetic number, because the mean of its divisors is an integer number (22974300).

Almost surely, 2^166605241 is an apocalyptic number.

166605241 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

166605241 is a deficient number, since it is larger than the sum of its proper divisors (17189159).

166605241 is a wasteful number, since it uses less digits than its factorization.

166605241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170279.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 166605241 is about 12907.5652622793. The cubic root of 166605241 is about 550.2535921475.

The spelling of 166605241 in words is "one hundred sixty-six million, six hundred five thousand, two hundred forty-one".