1662706085 has 4 divisors (see below), whose sum is σ = 1995247308. Its totient is φ = 1330164864.

The previous prime is 1662706043. The next prime is 1662706091. The reversal of 1662706085 is 5806072661.

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 751088836 + 911617249 = 27406^2 + 30193^2 .

It is a cyclic number.

It is not a de Polignac number, because 1662706085 - 2⁶ = 1662706021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166270604 + ... + 166270613.

It is an arithmetic number, because the mean of its divisors is an integer number (498811827).

Almost surely, 2^1662706085 is an apocalyptic number.

It is an amenable number.

1662706085 is a deficient number, since it is larger than the sum of its proper divisors (332541223).

1662706085 is an equidigital number, since it uses as much as digits as its factorization.

1662706085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332541222.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 1662706085 is about 40776.2931738529. The cubic root of 1662706085 is about 1184.6911988300.

The spelling of 1662706085 in words is "one billion, six hundred sixty-two million, seven hundred six thousand, eighty-five".