683998560 has 192 divisors, whose sum is σ = 2736115200. Its totient is φ = 156335616.

The previous prime is 683998547. The next prime is 683998571. The reversal of 683998560 is 65899386.

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

It is a junction number, because it is equal to n+sod(n) for n = 683998497 and 683998506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18931 + ... + 41549.

It is an arithmetic number, because the mean of its divisors is an integer number (14250600).

Almost surely, 2^683998560 is an apocalyptic number.

683998560 is a gapful number since it is divisible by the number (60) 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 683998560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1368057600).

683998560 is an abundant number, since it is smaller than the sum of its proper divisors (2052116640).

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

683998560 is a wasteful number, since it uses less digits than its factorization.

683998560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22650 (or 22636 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The square root of 683998560 is about 26153.3661313415. The cubic root of 683998560 is about 881.0861931841.

The spelling of 683998560 in words is "six hundred eighty-three million, nine hundred ninety-eight thousand, five hundred sixty".