166108801 has 4 divisors (see below), whose sum is σ = 167321412. Its totient is φ = 164896192.

The previous prime is 166108793. The next prime is 166108823. The reversal of 166108801 is 108801661.

It is a happy number.

166108801 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 113401201 + 52707600 = 10649^2 + 7260^2 .

It is a cyclic number.

It is not a de Polignac number, because 166108801 - 2³ = 166108793 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166108861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 606100 + ... + 606373.

It is an arithmetic number, because the mean of its divisors is an integer number (41830353).

Almost surely, 2^166108801 is an apocalyptic number.

It is an amenable number.

166108801 is a deficient number, since it is larger than the sum of its proper divisors (1212611).

166108801 is a wasteful number, since it uses less digits than its factorization.

166108801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212610.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 166108801 is about 12888.3203327664. The cubic root of 166108801 is about 549.7065111861.

The spelling of 166108801 in words is "one hundred sixty-six million, one hundred eight thousand, eight hundred one".