1712061665 has 4 divisors (see below), whose sum is σ = 2054474004. Its totient is φ = 1369649328.

The previous prime is 1712061647. The next prime is 1712061679. The reversal of 1712061665 is 5661602171.

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 976187536 + 735874129 = 31244^2 + 27127^2 .

It is a cyclic number.

It is not a de Polignac number, because 1712061665 - 2⁶ = 1712061601 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 171206162 + ... + 171206171.

It is an arithmetic number, because the mean of its divisors is an integer number (513618501).

Almost surely, 2^1712061665 is an apocalyptic number.

It is an amenable number.

1712061665 is a deficient number, since it is larger than the sum of its proper divisors (342412339).

1712061665 is an equidigital number, since it uses as much as digits as its factorization.

1712061665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342412338.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 1712061665 is about 41377.0668970143. The cubic root of 1712061665 is about 1196.2991688758.

The spelling of 1712061665 in words is "one billion, seven hundred twelve million, sixty-one thousand, six hundred sixty-five".