1706987005 has 4 divisors (see below), whose sum is σ = 2048384412. Its totient is φ = 1365589600.

The previous prime is 1706987003. The next prime is 1706987027. The reversal of 1706987005 is 5007896071.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5007896071 = 491 ⋅10199381.

It can be written as a sum of positive squares in 2 ways, for example, as 571162201 + 1135824804 = 23899^2 + 33702^2 .

It is not a de Polignac number, because 1706987005 - 2¹ = 1706987003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1706987003) 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, 170698696 + ... + 170698705.

It is an arithmetic number, because the mean of its divisors is an integer number (512096103).

Almost surely, 2^1706987005 is an apocalyptic number.

It is an amenable number.

1706987005 is a deficient number, since it is larger than the sum of its proper divisors (341397407).

1706987005 is an equidigital number, since it uses as much as digits as its factorization.

1706987005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341397406.

The product of its (nonzero) digits is 105840, while the sum is 43.

The square root of 1706987005 is about 41315.6992558519. The cubic root of 1706987005 is about 1195.1160301194.

The spelling of 1706987005 in words is "one billion, seven hundred six million, nine hundred eighty-seven thousand, five".