683724133 has 4 divisors (see below), whose sum is σ = 683778348. Its totient is φ = 683669920.

The previous prime is 683724131. The next prime is 683724149. The reversal of 683724133 is 331427386.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 404733924 + 278990209 = 20118^2 + 16703^2 .

It is a cyclic number.

It is not a de Polignac number, because 683724133 - 2¹ = 683724131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 683724092 and 683724101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (683724131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2835 + ... + 37087.

It is an arithmetic number, because the mean of its divisors is an integer number (170944587).

Almost surely, 2^683724133 is an apocalyptic number.

It is an amenable number.

683724133 is a deficient number, since it is larger than the sum of its proper divisors (54215).

683724133 is a wasteful number, since it uses less digits than its factorization.

683724133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54214.

The product of its digits is 72576, while the sum is 37.

The square root of 683724133 is about 26148.1191101769. The cubic root of 683724133 is about 880.9683439181.

The spelling of 683724133 in words is "six hundred eighty-three million, seven hundred twenty-four thousand, one hundred thirty-three".