166078871 has 8 divisors (see below), whose sum is σ = 193843200. Its totient is φ = 139324248.

The previous prime is 166078859. The next prime is 166078879. The reversal of 166078871 is 178870661.

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

It is not a de Polignac number, because 166078871 - 2²⁶ = 98970007 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 (166078879) 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, 252071 + ... + 252728.

It is an arithmetic number, because the mean of its divisors is an integer number (24230400).

Almost surely, 2^166078871 is an apocalyptic number.

166078871 is a deficient number, since it is larger than the sum of its proper divisors (27764329).

166078871 is an equidigital number, since it uses as much as digits as its factorization.

166078871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504853.

The product of its (nonzero) digits is 112896, while the sum is 44.

The square root of 166078871 is about 12887.1591516517. The cubic root of 166078871 is about 549.6734932604.

The spelling of 166078871 in words is "one hundred sixty-six million, seventy-eight thousand, eight hundred seventy-one".