1671717317 has 4 divisors (see below), whose sum is σ = 1682365356. Its totient is φ = 1661069280.

The previous prime is 1671717293. The next prime is 1671717323. The reversal of 1671717317 is 7137171761.

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 426050881 + 1245666436 = 20641^2 + 35294^2 .

It is a cyclic number.

It is not a de Polignac number, because 1671717317 - 2¹⁸ = 1671455173 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 (1671717347) 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, 5323784 + ... + 5324097.

It is an arithmetic number, because the mean of its divisors is an integer number (420591339).

Almost surely, 2^1671717317 is an apocalyptic number.

It is an amenable number.

1671717317 is a deficient number, since it is larger than the sum of its proper divisors (10648039).

1671717317 is a wasteful number, since it uses less digits than its factorization.

1671717317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10648038.

The product of its digits is 43218, while the sum is 41.

The square root of 1671717317 is about 40886.6398350366. The cubic root of 1671717317 is about 1186.8275353791.

The spelling of 1671717317 in words is "one billion, six hundred seventy-one million, seven hundred seventeen thousand, three hundred seventeen".