683965440 has 132 divisors (see below), whose sum is σ = 2370082104. Its totient is φ = 182378496.

The previous prime is 683965433. The next prime is 683965453. The reversal of 683965440 is 44569386.

It is a super-2 number, since 2×683965440² = 935617446228787200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38659 + ... + 53501.

Almost surely, 2^683965440 is an apocalyptic number.

683965440 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 683965440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1185041052).

683965440 is an abundant number, since it is smaller than the sum of its proper divisors (1686116664).

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

683965440 is a wasteful number, since it uses less digits than its factorization.

683965440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14874 (or 14853 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 683965440 is about 26152.7329355844. The cubic root of 683965440 is about 881.0719718843.

The spelling of 683965440 in words is "six hundred eighty-three million, nine hundred sixty-five thousand, four hundred forty".