1717680223609 has 21 divisors (see below), whose sum is σ = 2004482423791. Its totient is φ = 1471912017240.

The previous prime is 1717680223543. The next prime is 1717680223613. The reversal of 1717680223609 is 9063220867171.

The square root of 1717680223609 is 1310603.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1542571452009 + 175108771600 = 1242003^2 + 418460^2 .

It is not a de Polignac number, because 1717680223609 - 2¹⁷ = 1717680092537 is a prime.

It is a super-3 number, since 3×1717680223609³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1717680233609) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 449534919 + ... + 449538739.

Almost surely, 2^{1717680223609} is an apocalyptic number.

1717680223609 is the 1310603-rd square number.

1717680223609 is the 655302-nd centered octagonal number.

It is an amenable number.

1717680223609 is a deficient number, since it is larger than the sum of its proper divisors (286802200182).

1717680223609 is an frugal number, since it uses more digits than its factorization.

1717680223609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7684 (or 3828 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 52.

The spelling of 1717680223609 in words is "one trillion, seven hundred seventeen billion, six hundred eighty million, two hundred twenty-three thousand, six hundred nine".