166535673 has 8 divisors (see below), whose sum is σ = 225687936. Its totient is φ = 109203600.

The previous prime is 166535657. The next prime is 166535687. The reversal of 166535673 is 376535661.

It is a happy number.

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

It is not a de Polignac number, because 166535673 - 2⁴ = 166535657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166533673) 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, 454833 + ... + 455198.

It is an arithmetic number, because the mean of its divisors is an integer number (28210992).

Almost surely, 2^166535673 is an apocalyptic number.

It is an amenable number.

166535673 is a deficient number, since it is larger than the sum of its proper divisors (59152263).

166535673 is an equidigital number, since it uses as much as digits as its factorization.

166535673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910095.

The product of its digits is 340200, while the sum is 42.

The square root of 166535673 is about 12904.8701272039. The cubic root of 166535673 is about 550.1769931742.

The spelling of 166535673 in words is "one hundred sixty-six million, five hundred thirty-five thousand, six hundred seventy-three".