683779904 has 56 divisors (see below), whose sum is σ = 1448043840. Its totient is φ = 319417344.

The previous prime is 683779897. The next prime is 683779907. The reversal of 683779904 is 409977386.

It is a super-2 number, since 2×683779904² = 935109914228498432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (683779907) 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 7 ways as a sum of consecutive naturals, for example, 84917 + ... + 92619.

Almost surely, 2^683779904 is an apocalyptic number.

683779904 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 683779904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (724021920).

683779904 is an abundant number, since it is smaller than the sum of its proper divisors (764263936).

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

683779904 is a wasteful number, since it uses less digits than its factorization.

683779904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7807 (or 7797 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 53.

The square root of 683779904 is about 26149.1855322494. The cubic root of 683779904 is about 880.9922966340.

The spelling of 683779904 in words is "six hundred eighty-three million, seven hundred seventy-nine thousand, nine hundred four".