1206606171 has 4 divisors (see below), whose sum is σ = 1608808232. Its totient is φ = 804404112.

The previous prime is 1206606143. The next prime is 1206606173. The reversal of 1206606171 is 1716066021.

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

It is not a de Polignac number, because 1206606171 - 2²² = 1202411867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1206606173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201101026 + ... + 201101031.

It is an arithmetic number, because the mean of its divisors is an integer number (402202058).

Almost surely, 2^1206606171 is an apocalyptic number.

1206606171 is a deficient number, since it is larger than the sum of its proper divisors (402202061).

1206606171 is an equidigital number, since it uses as much as digits as its factorization.

1206606171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402202060.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 1206606171 is about 34736.2371450910. The cubic root of 1206606171 is about 1064.6050306418.

The spelling of 1206606171 in words is "one billion, two hundred six million, six hundred six thousand, one hundred seventy-one".