74743 has 4 divisors (see below), whose sum is σ = 76608. Its totient is φ = 72880.

The previous prime is 74731. The next prime is 74747. The reversal of 74743 is 34747.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 74743 - 2⁹ = 74231 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a plaindrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 871 + ... + 952.

It is an arithmetic number, because the mean of its divisors is an integer number (19152).

2⁷⁴⁷⁴³ is an apocalyptic number.

74743 is a deficient number, since it is larger than the sum of its proper divisors (1865).

74743 is a wasteful number, since it uses less digits than its factorization.

74743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1864.

The product of its digits is 2352, while the sum is 25.

The square root of 74743 is about 273.3916604434. The cubic root of 74743 is about 42.1234087633.

It can be divided in two parts, 7474 and 3, that multiplied together give a palindrome (22422).

The spelling of 74743 in words is "seventy-four thousand, seven hundred forty-three", and thus it is an iban number.