74005221 has 8 divisors (see below), whose sum is σ = 98720064. Its totient is φ = 49313600.

The previous prime is 74005219. The next prime is 74005229. The reversal of 74005221 is 12250047.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74005221 - 2¹ = 74005219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74005229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4000 + ... + 12806.

It is an arithmetic number, because the mean of its divisors is an integer number (12340008).

Almost surely, 2^74005221 is an apocalyptic number.

It is an amenable number.

74005221 is a deficient number, since it is larger than the sum of its proper divisors (24714843).

74005221 is a wasteful number, since it uses less digits than its factorization.

74005221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11611.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 74005221 is about 8602.6287261511. The cubic root of 74005221 is about 419.8435188039.

Adding to 74005221 its reverse (12250047), we get a palindrome (86255268).

It can be divided in two parts, 7400 and 5221, that added together give a palindrome (12621).

The spelling of 74005221 in words is "seventy-four million, five thousand, two hundred twenty-one".