617197056 has 160 divisors (see below), whose sum is σ = 1897378560. Its totient is φ = 174637056.

The previous prime is 617197051. The next prime is 617197069. The reversal of 617197056 is 650791716.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 617196999 and 617197017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (617197051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1472815 + ... + 1473233.

It is an arithmetic number, because the mean of its divisors is an integer number (11858616).

Almost surely, 2^617197056 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 617197056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (948689280).

617197056 is an abundant number, since it is smaller than the sum of its proper divisors (1280181504).

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

617197056 is a wasteful number, since it uses less digits than its factorization.

617197056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584 (or 568 counting only the distinct ones).

The product of its (nonzero) digits is 79380, while the sum is 42.

The square root of 617197056 is about 24843.4509680117. The cubic root of 617197056 is about 851.4149701080.

The spelling of 617197056 in words is "six hundred seventeen million, one hundred ninety-seven thousand, fifty-six".