683409408 has 152 divisors (see below), whose sum is σ = 2013262080. Its totient is φ = 204472320.

The previous prime is 683409403. The next prime is 683409409. The reversal of 683409408 is 804904386.

It is a self number, because there is not a number n which added to its sum of digits gives 683409408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (683409403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8650713 + ... + 8650791.

Almost surely, 2^683409408 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 683409408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1006631040).

683409408 is an abundant number, since it is smaller than the sum of its proper divisors (1329852672).

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

683409408 is an frugal number, since it uses more digits than its factorization.

683409408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129 (or 95 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 683409408 is about 26142.1002981780. The cubic root of 683409408 is about 880.8331503501.

The spelling of 683409408 in words is "six hundred eighty-three million, four hundred nine thousand, four hundred eight".