788640617 has 8 divisors (see below), whose sum is σ = 808343592. Its totient is φ = 768960000.

The previous prime is 788640613. The next prime is 788640661. The reversal of 788640617 is 716046887.

788640617 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 92525161 + 696115456 = 9619^2 + 26384^2 .

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 788640617 - 2² = 788640613 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (788640613) 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, 83117 + ... + 92117.

It is an arithmetic number, because the mean of its divisors is an integer number (101042949).

Almost surely, 2^788640617 is an apocalyptic number.

It is an amenable number.

788640617 is a deficient number, since it is larger than the sum of its proper divisors (19702975).

788640617 is a wasteful number, since it uses less digits than its factorization.

788640617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11179.

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 788640617 is about 28082.7458949441. The cubic root of 788640617 is about 923.9030061447.

The spelling of 788640617 in words is "seven hundred eighty-eight million, six hundred forty thousand, six hundred seventeen".