317649 has 4 divisors (see below), whose sum is σ = 423536. Its totient is φ = 211764.

The previous prime is 317621. The next prime is 317651. The reversal of 317649 is 946713.

It is a happy number.

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.

It is not a de Polignac number, because 317649 - 2⁵ = 317617 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

317649 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 317649.

It is not an unprimeable number, because it can be changed into a prime (317609) 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, 52939 + ... + 52944.

It is an arithmetic number, because the mean of its divisors is an integer number (105884).

2³¹⁷⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

317649 is a deficient number, since it is larger than the sum of its proper divisors (105887).

317649 is a wasteful number, since it uses less digits than its factorization.

317649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105886.

The product of its digits is 4536, while the sum is 30.

The square root of 317649 is about 563.6035840908. The cubic root of 317649 is about 68.2311195745.

The spelling of 317649 in words is "three hundred seventeen thousand, six hundred forty-nine".