166776133 has 8 divisors (see below), whose sum is σ = 169269408. Its totient is φ = 164294544.

The previous prime is 166776119. The next prime is 166776139. The reversal of 166776133 is 331677661.

It is a happy number.

166776133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 166776133 - 2⁹ = 166775621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166776139) 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, 28266 + ... + 33652.

It is an arithmetic number, because the mean of its divisors is an integer number (21158676).

Almost surely, 2^166776133 is an apocalyptic number.

It is an amenable number.

166776133 is a deficient number, since it is larger than the sum of its proper divisors (2493275).

166776133 is an equidigital number, since it uses as much as digits as its factorization.

166776133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5843.

The product of its digits is 95256, while the sum is 40.

The square root of 166776133 is about 12914.1834043040. The cubic root of 166776133 is about 550.4416650706.

The spelling of 166776133 in words is "one hundred sixty-six million, seven hundred seventy-six thousand, one hundred thirty-three".