782642317 has 8 divisors (see below), whose sum is σ = 807118200. Its totient is φ = 758423040.

The previous prime is 782642299. The next prime is 782642369. The reversal of 782642317 is 713246287.

782642317 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 82828201 + 699814116 = 9101^2 + 26454^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 782642317 - 2²⁷ = 648424589 is a prime.

It is a super-3 number, since 3×782642317³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 782642317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (782642387) 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, 57948 + ... + 70165.

It is an arithmetic number, because the mean of its divisors is an integer number (100889775).

Almost surely, 2^782642317 is an apocalyptic number.

It is an amenable number.

782642317 is a deficient number, since it is larger than the sum of its proper divisors (24475883).

782642317 is a wasteful number, since it uses less digits than its factorization.

782642317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128303.

The product of its digits is 112896, while the sum is 40.

The square root of 782642317 is about 27975.7451554020. The cubic root of 782642317 is about 921.5546795226.

The spelling of 782642317 in words is "seven hundred eighty-two million, six hundred forty-two thousand, three hundred seventeen".