166683073 has 4 divisors (see below), whose sum is σ = 166904020. Its totient is φ = 166462128.

The previous prime is 166683061. The next prime is 166683089. The reversal of 166683073 is 370386661.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 110313009 + 56370064 = 10503^2 + 7508^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166683073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166683053) 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, 109338 + ... + 110851.

It is an arithmetic number, because the mean of its divisors is an integer number (41726005).

Almost surely, 2^166683073 is an apocalyptic number.

It is an amenable number.

166683073 is a deficient number, since it is larger than the sum of its proper divisors (220947).

166683073 is an equidigital number, since it uses as much as digits as its factorization.

166683073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220946.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 166683073 is about 12910.5798862793. The cubic root of 166683073 is about 550.3392650630.

The spelling of 166683073 in words is "one hundred sixty-six million, six hundred eighty-three thousand, seventy-three".