• 74 can be written using four 4's:
• Deleting all the even digits from 274 = 18889465931478580854784 we obtain a prime (1959317557).
74 is nontrivially palindromic in base 6.
74 is an esthetic number in base 14, because in such base its adjacent digits differ by 1.
It is a semiprime because it is the product of two primes.
It is a magnanimous number.
It is an alternating number because its digits alternate between odd and even.
It is a hungry number.
74 is an undulating number in base 6.
It is a Curzon number.
It is a plaindrome in base 5, base 7, base 8, base 11, base 13, base 15 and base 16.
It is a nialpdrome in base 9, base 10, base 12 and base 14.
74 is a wasteful number, since it uses less digits than its factorization.
74 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 39.
The square root of 74 is about 8.6023252670. The cubic root of 74 is about 4.1983364538.
Adding to 74 its reverse (47), we get a palindrome (121).
Subtracting from 74 its reverse (47), we obtain a cube (27 = 33).