683538240 has 336 divisors, whose sum is σ = 2756147904. Its totient is φ = 141926400.

The previous prime is 683538223. The next prime is 683538241. The reversal of 683538240 is 42835386.

It is a tau number, because it is divible by the number of its divisors (336).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (683538241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 516780 + ... + 518100.

Almost surely, 2^683538240 is an apocalyptic number.

683538240 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 683538240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1378073952).

683538240 is an abundant number, since it is smaller than the sum of its proper divisors (2072609664).

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

683538240 is a wasteful number, since it uses less digits than its factorization.

683538240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366 (or 1349 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The square root of 683538240 is about 26144.5642533969. The cubic root of 683538240 is about 880.8884965623. Note that the first 3 decimals are identical.

The spelling of 683538240 in words is "six hundred eighty-three million, five hundred thirty-eight thousand, two hundred forty".