617125615717 has 8 divisors (see below), whose sum is σ = 665375957624. Its totient is φ = 568986579648.

The previous prime is 617125615633. The next prime is 617125615723. The reversal of 617125615717 is 717516521716.

It can be written as a sum of positive squares in 4 ways, for example, as 50298827076 + 566826788641 = 224274^2 + 752879^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-617125615717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (617125615727) 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, 27814938 + ... + 27837115.

It is an arithmetic number, because the mean of its divisors is an integer number (83171994703).

Almost surely, 2^617125615717 is an apocalyptic number.

It is an amenable number.

617125615717 is a deficient number, since it is larger than the sum of its proper divisors (48250341907).

617125615717 is a wasteful number, since it uses less digits than its factorization.

617125615717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55652919.

The product of its digits is 617400, while the sum is 49.

The spelling of 617125615717 in words is "six hundred seventeen billion, one hundred twenty-five million, six hundred fifteen thousand, seven hundred seventeen".