317642649 has 8 divisors (see below), whose sum is σ = 424886592. Its totient is φ = 211080240.

The previous prime is 317642641. The next prime is 317642651. The reversal of 317642649 is 946246713.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 317642649 - 2³ = 317642641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 317642649.

It is not an unprimeable number, because it can be changed into a prime (317642641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169294 + ... + 171159.

It is an arithmetic number, because the mean of its divisors is an integer number (53110824).

Almost surely, 2^317642649 is an apocalyptic number.

It is an amenable number.

317642649 is a deficient number, since it is larger than the sum of its proper divisors (107243943).

317642649 is a wasteful number, since it uses less digits than its factorization.

317642649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340767.

The product of its digits is 217728, while the sum is 42.

The square root of 317642649 is about 17822.5320591660. The cubic root of 317642649 is about 682.3066483914.

The spelling of 317642649 in words is "three hundred seventeen million, six hundred forty-two thousand, six hundred forty-nine".