166755871 has 4 divisors (see below), whose sum is σ = 169040272. Its totient is φ = 164471472.

The previous prime is 166755833. The next prime is 166755899. The reversal of 166755871 is 178557661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 178557661 = 223 ⋅800707.

It is a cyclic number.

It is not a de Polignac number, because 166755871 - 2²³ = 158367263 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 (166755811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1142091 + ... + 1142236.

It is an arithmetic number, because the mean of its divisors is an integer number (42260068).

Almost surely, 2^166755871 is an apocalyptic number.

166755871 is a deficient number, since it is larger than the sum of its proper divisors (2284401).

166755871 is an equidigital number, since it uses as much as digits as its factorization.

166755871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2284400.

The product of its digits is 352800, while the sum is 46.

The square root of 166755871 is about 12913.3988941719. The cubic root of 166755871 is about 550.4193727108.

The spelling of 166755871 in words is "one hundred sixty-six million, seven hundred fifty-five thousand, eight hundred seventy-one".