683944753 has 4 divisors (see below), whose sum is σ = 684803700. Its totient is φ = 683085808.

The previous prime is 683944747. The next prime is 683944759. The reversal of 683944753 is 357449386.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (683944747) and next prime (683944759).

It can be written as a sum of positive squares in 2 ways, for example, as 412617969 + 271326784 = 20313^2 + 16472^2 .

It is a cyclic number.

It is not a de Polignac number, because 683944753 - 2¹⁷ = 683813681 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 683944697 and 683944706.

It is not an unprimeable number, because it can be changed into a prime (683944759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 428278 + ... + 429871.

It is an arithmetic number, because the mean of its divisors is an integer number (171200925).

Almost surely, 2^683944753 is an apocalyptic number.

It is an amenable number.

683944753 is a deficient number, since it is larger than the sum of its proper divisors (858947).

683944753 is an equidigital number, since it uses as much as digits as its factorization.

683944753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858946.

The product of its digits is 2177280, while the sum is 49.

The square root of 683944753 is about 26152.3374289948. The cubic root of 683944753 is about 881.0630889210.

The spelling of 683944753 in words is "six hundred eighty-three million, nine hundred forty-four thousand, seven hundred fifty-three".