74427 has 4 divisors (see below), whose sum is σ = 99240. Its totient is φ = 49616.

The previous prime is 74419. The next prime is 74441. The reversal of 74427 is 72447.

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 74427 - 2³ = 74419 is a prime.

It is a D-number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 74397 and 74406.

It is not an unprimeable number, because it can be changed into a prime (74027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12402 + ... + 12407.

It is an arithmetic number, because the mean of its divisors is an integer number (24810).

2⁷⁴⁴²⁷ is an apocalyptic number.

74427 is a deficient number, since it is larger than the sum of its proper divisors (24813).

74427 is a wasteful number, since it uses less digits than its factorization.

74427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24812.

The product of its digits is 1568, while the sum is 24.

The square root of 74427 is about 272.8131228515. The cubic root of 74427 is about 42.0639615010.

The spelling of 74427 in words is "seventy-four thousand, four hundred twenty-seven", and thus it is an iban number.