166535441 has 8 divisors (see below), whose sum is σ = 172665600. Its totient is φ = 160452720.

The previous prime is 166535423. The next prime is 166535449. The reversal of 166535441 is 144535661.

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

It is a cyclic number.

It is not a de Polignac number, because 166535441 - 2⁶ = 166535377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (166535449) 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, 4631 + ... + 18828.

It is an arithmetic number, because the mean of its divisors is an integer number (21583200).

Almost surely, 2^166535441 is an apocalyptic number.

It is an amenable number.

166535441 is a deficient number, since it is larger than the sum of its proper divisors (6130159).

166535441 is a wasteful number, since it uses less digits than its factorization.

166535441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23719.

The product of its digits is 43200, while the sum is 35.

The square root of 166535441 is about 12904.8611383463. The cubic root of 166535441 is about 550.1767376912.

The spelling of 166535441 in words is "one hundred sixty-six million, five hundred thirty-five thousand, four hundred forty-one".