201665083 has 4 divisors (see below), whose sum is σ = 201725128. Its totient is φ = 201605040.

The previous prime is 201665071. The next prime is 201665099. The reversal of 201665083 is 380566102.

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 201665083 - 2²¹ = 199567931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201665003) 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, 24666 + ... + 31807.

It is an arithmetic number, because the mean of its divisors is an integer number (50431282).

Almost surely, 2^201665083 is an apocalyptic number.

201665083 is a deficient number, since it is larger than the sum of its proper divisors (60045).

201665083 is an equidigital number, since it uses as much as digits as its factorization.

201665083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60044.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 201665083 is about 14200.8831767605. The cubic root of 201665083 is about 586.4219752995.

The spelling of 201665083 in words is "two hundred one million, six hundred sixty-five thousand, eighty-three".