743 has 2 divisors, whose sum is σ = 744.
Its totient is φ = 742.
The previous prime is 739. The next prime is 751. The reversal of 743 is 347.
743 is nontrivially palindromic in base 11.
It is a weak prime.
743 is a truncatable prime.
It is an emirp because it is prime and its reverse (347) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 743 - 22 = 739 is a prime.
It is a Sophie Germain prime.
It is a Chen prime.
It is an alternating number because its digits alternate between odd and even.
743 is an undulating number in base 11.
It is a plaindrome in base 8 and base 15.
It is a nialpdrome in base 7 and base 10.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (733) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371 + 372.
It is an arithmetic number, because the mean of its divisors is an integer number (372).
743 is a deficient number, since it is larger than the sum of its proper divisors (1).
743 is an equidigital number, since it uses as much as digits as its factorization.
743 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 84, while the sum is 14.
The square root of 743 is about 27.2580263409.
The cubic root of 743 is about 9.0572482453.
Adding to 743 its sum of digits (14), we get a palindrome (757).
Subtracting from 743 its sum of digits (14), we obtain a 6-th power (729 = 36).
It can be divided in two parts, 74 and 3, that multiplied together give a palindrome (222).
The spelling of 743 in words is "seven hundred forty-three", and thus it is an aban number and an iban number.