166321082 has 8 divisors (see below), whose sum is σ = 249904116. Its totient is φ = 83019712.

The previous prime is 166321069. The next prime is 166321087. The reversal of 166321082 is 280123661.

It can be written as a sum of positive squares in 2 ways, for example, as 141110641 + 25210441 = 11879^2 + 5021^2 .

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

It is not an unprimeable number, because it can be changed into a prime (166321087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68933 + ... + 71304.

Almost surely, 2^166321082 is an apocalyptic number.

166321082 is a deficient number, since it is larger than the sum of its proper divisors (83583034).

166321082 is a wasteful number, since it uses less digits than its factorization.

166321082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140832.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 166321082 is about 12896.5531053844. The cubic root of 166321082 is about 549.9405798066.

The spelling of 166321082 in words is "one hundred sixty-six million, three hundred twenty-one thousand, eighty-two".