617093561656 has 128 divisors (see below), whose sum is σ = 1411019688960. Its totient is φ = 249255820800.

The previous prime is 617093561647. The next prime is 617093561659. The reversal of 617093561656 is 656165390716.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 617093561597 and 617093561606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (617093561659) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3185775 + ... + 3373921.

It is an arithmetic number, because the mean of its divisors is an integer number (11023591320).

Almost surely, 2^617093561656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 617093561656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (705509844480).

617093561656 is an abundant number, since it is smaller than the sum of its proper divisors (793926127304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

617093561656 is a wasteful number, since it uses less digits than its factorization.

617093561656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188285 (or 188281 counting only the distinct ones).

The product of its (nonzero) digits is 6123600, while the sum is 55.

The spelling of 617093561656 in words is "six hundred seventeen billion, ninety-three million, five hundred sixty-one thousand, six hundred fifty-six".