683790840 has 48 divisors (see below), whose sum is σ = 2222321400. Its totient is φ = 182344128.

The previous prime is 683790817. The next prime is 683790841. The reversal of 683790840 is 48097386.

683790840 = 2884² + 2885² + ... + 2963².

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (683790841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 949350 + ... + 950069.

Almost surely, 2^683790840 is an apocalyptic number.

683790840 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

683790840 is an abundant number, since it is smaller than the sum of its proper divisors (1538530560).

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

683790840 is a wasteful number, since it uses less digits than its factorization.

683790840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1899436 (or 1899429 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 683790840 is about 26149.3946392646. The cubic root of 683790840 is about 880.9969933111.

The spelling of 683790840 in words is "six hundred eighty-three million, seven hundred ninety thousand, eight hundred forty".