166341977 has 8 divisors (see below), whose sum is σ = 170539776. Its totient is φ = 162171712.

The previous prime is 166341949. The next prime is 166341983. The reversal of 166341977 is 779143661.

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 166341977 - 2⁶ = 166341913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166341907) 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, 5633 + ... + 19089.

It is an arithmetic number, because the mean of its divisors is an integer number (21317472).

Almost surely, 2^166341977 is an apocalyptic number.

It is an amenable number.

166341977 is a deficient number, since it is larger than the sum of its proper divisors (4197799).

166341977 is a wasteful number, since it uses less digits than its factorization.

166341977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13767.

The product of its digits is 190512, while the sum is 44.

The square root of 166341977 is about 12897.3631801233. The cubic root of 166341977 is about 549.9636086115.

The spelling of 166341977 in words is "one hundred sixty-six million, three hundred forty-one thousand, nine hundred seventy-seven".