201666083 has 4 divisors (see below), whose sum is σ = 202378968. Its totient is φ = 200953200.

The previous prime is 201666043. The next prime is 201666089. The reversal of 201666083 is 380666102.

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

It is a cyclic number.

It is not a de Polignac number, because 201666083 - 2¹² = 201661987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201666089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356018 + ... + 356583.

It is an arithmetic number, because the mean of its divisors is an integer number (50594742).

Almost surely, 2^201666083 is an apocalyptic number.

201666083 is a deficient number, since it is larger than the sum of its proper divisors (712885).

201666083 is an equidigital number, since it uses as much as digits as its factorization.

201666083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712884.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 201666083 is about 14200.9183857946. The cubic root of 201666083 is about 586.4229445980.

The spelling of 201666083 in words is "two hundred one million, six hundred sixty-six thousand, eighty-three".