683557056 has 588 divisors, whose sum is σ = 2658508272. Its totient is φ = 172440576.

The previous prime is 683557051. The next prime is 683557087. The reversal of 683557056 is 650755386.

It is a tau number, because it is divible by the number of its divisors (588).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (683557051) 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 83 ways as a sum of consecutive naturals, for example, 29719861 + ... + 29719883.

Almost surely, 2^683557056 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 683557056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1329254136).

683557056 is an abundant number, since it is smaller than the sum of its proper divisors (1974951216).

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

683557056 is a wasteful number, since it uses less digits than its factorization.

683557056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80 (or 48 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 45.

The square root of 683557056 is about 26144.9240962754. The cubic root of 683557056 is about 880.8965793317.

The spelling of 683557056 in words is "six hundred eighty-three million, five hundred fifty-seven thousand, fifty-six".