1706665313 has 4 divisors (see below), whose sum is σ = 1746355248. Its totient is φ = 1666975380.

The previous prime is 1706665273. The next prime is 1706665319. The reversal of 1706665313 is 3135666071.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3135666071 = 751 ⋅4175321.

It is a cyclic number.

It is not a de Polignac number, because 1706665313 - 2¹⁶ = 1706599777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1706665319) 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, 19844903 + ... + 19844988.

It is an arithmetic number, because the mean of its divisors is an integer number (436588812).

Almost surely, 2^1706665313 is an apocalyptic number.

It is an amenable number.

1706665313 is a deficient number, since it is larger than the sum of its proper divisors (39689935).

1706665313 is an equidigital number, since it uses as much as digits as its factorization.

1706665313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39689934.

The product of its (nonzero) digits is 68040, while the sum is 38.

The square root of 1706665313 is about 41311.8059760161. The cubic root of 1706665313 is about 1195.0409497939.

The spelling of 1706665313 in words is "one billion, seven hundred six million, six hundred sixty-five thousand, three hundred thirteen".