166706371 has 8 divisors (see below), whose sum is σ = 179721360. Its totient is φ = 153718752.

The previous prime is 166706363. The next prime is 166706383. The reversal of 166706371 is 173607661.

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 166706371 - 2³ = 166706363 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166706371.

It is not an unprimeable number, because it can be changed into a prime (166706971) 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, 6840 + ... + 19498.

It is an arithmetic number, because the mean of its divisors is an integer number (22465170).

Almost surely, 2^166706371 is an apocalyptic number.

166706371 is a deficient number, since it is larger than the sum of its proper divisors (13014989).

166706371 is a wasteful number, since it uses less digits than its factorization.

166706371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13685.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 166706371 is about 12911.4821380041. The cubic root of 166706371 is about 550.3649049528.

The spelling of 166706371 in words is "one hundred sixty-six million, seven hundred six thousand, three hundred seventy-one".