74569 has 4 divisors (see below), whose sum is σ = 81360. Its totient is φ = 67780.

The previous prime is 74567. The next prime is 74573. The reversal of 74569 is 96547.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 74569 - 2¹ = 74567 is a prime.

It is a super-2 number, since 2×74569² = 11121071522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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

It is a Duffinian number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 74569.

It is not an unprimeable number, because it can be changed into a prime (74561) 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 in 3 ways as a sum of consecutive naturals, for example, 3379 + ... + 3400.

It is an arithmetic number, because the mean of its divisors is an integer number (20340).

2⁷⁴⁵⁶⁹ is an apocalyptic number.

It is an amenable number.

74569 is a deficient number, since it is larger than the sum of its proper divisors (6791).

74569 is a wasteful number, since it uses less digits than its factorization.

74569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6790.

The product of its digits is 7560, while the sum is 31.

The square root of 74569 is about 273.0732502462. The cubic root of 74569 is about 42.0906959202.

The spelling of 74569 in words is "seventy-four thousand, five hundred sixty-nine".