683350640 has 80 divisors (see below), whose sum is σ = 1826883072. Its totient is φ = 232856832.

The previous prime is 683350601. The next prime is 683350643. The reversal of 683350640 is 46053386.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 683350640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (683350643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89867 + ... + 97173.

Almost surely, 2^683350640 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 683350640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (913441536).

683350640 is an abundant number, since it is smaller than the sum of its proper divisors (1143532432).

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

683350640 is a wasteful number, since it uses less digits than its factorization.

683350640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7494 (or 7488 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 683350640 is about 26140.9762633303. The cubic root of 683350640 is about 880.8079013140.

The spelling of 683350640 in words is "six hundred eighty-three million, three hundred fifty thousand, six hundred forty".