683399808 has 512 divisors, whose sum is σ = 2590963200. Its totient is φ = 172523520.

The previous prime is 683399803. The next prime is 683399833. The reversal of 683399808 is 808993386.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (683399803) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12894310 + ... + 12894362.

It is an arithmetic number, because the mean of its divisors is an integer number (5060475).

Almost surely, 2^683399808 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 683399808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1295481600).

683399808 is an abundant number, since it is smaller than the sum of its proper divisors (1907563392).

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

683399808 is a wasteful number, since it uses less digits than its factorization.

683399808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The square root of 683399808 is about 26141.9166856602. The cubic root of 683399808 is about 880.8290259128.

The spelling of 683399808 in words is "six hundred eighty-three million, three hundred ninety-nine thousand, eight hundred eight".