683142749 has 2 divisors, whose sum is σ = 683142750. Its totient is φ = 683142748.

The previous prime is 683142737. The next prime is 683142793. The reversal of 683142749 is 947241386.

It is an a-pointer prime, because the next prime (683142793) can be obtained adding 683142749 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 632874649 + 50268100 = 25157^2 + 7090^2 .

It is a cyclic number.

It is not a de Polignac number, because 683142749 - 2²⁰ = 682094173 is a prime.

It is a super-2 number, since 2×683142749² = 933368031022554002, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (683142709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341571374 + 341571375.

It is an arithmetic number, because the mean of its divisors is an integer number (341571375).

Almost surely, 2^683142749 is an apocalyptic number.

It is an amenable number.

683142749 is a deficient number, since it is larger than the sum of its proper divisors (1).

683142749 is an equidigital number, since it uses as much as digits as its factorization.

683142749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 44.

The square root of 683142749 is about 26136.9996174006. Note that the first 3 decimals coincide. The cubic root of 683142749 is about 880.7185715728.

The spelling of 683142749 in words is "six hundred eighty-three million, one hundred forty-two thousand, seven hundred forty-nine".