683661108 has 72 divisors (see below), whose sum is σ = 1802582208. Its totient is φ = 201197568.

The previous prime is 683661089. The next prime is 683661113. The reversal of 683661108 is 801166386.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39316 + ... + 53972.

It is an arithmetic number, because the mean of its divisors is an integer number (25035864).

Almost surely, 2^683661108 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 683661108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (901291104).

683661108 is an abundant number, since it is smaller than the sum of its proper divisors (1118921100).

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

683661108 is a wasteful number, since it uses less digits than its factorization.

683661108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14713 (or 14698 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 683661108 is about 26146.9139287986. The cubic root of 683661108 is about 880.9412741623.

The spelling of 683661108 in words is "six hundred eighty-three million, six hundred sixty-one thousand, one hundred eight".