166083321 has 8 divisors (see below), whose sum is σ = 221538240. Its totient is φ = 110675312.

The previous prime is 166083317. The next prime is 166083341. The reversal of 166083321 is 123380661.

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 166083321 - 2² = 166083317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166083341) 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 7 ways as a sum of consecutive naturals, for example, 2406 + ... + 18383.

It is an arithmetic number, because the mean of its divisors is an integer number (27692280).

Almost surely, 2^166083321 is an apocalyptic number.

It is an amenable number.

166083321 is a deficient number, since it is larger than the sum of its proper divisors (55454919).

166083321 is a wasteful number, since it uses less digits than its factorization.

166083321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23455.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 166083321 is about 12887.3318029761. The cubic root of 166083321 is about 549.6784026250.

The spelling of 166083321 in words is "one hundred sixty-six million, eighty-three thousand, three hundred twenty-one".