74530217 has 8 divisors (see below), whose sum is σ = 78711360. Its totient is φ = 70374960.

The previous prime is 74530213. The next prime is 74530219. The reversal of 74530217 is 71203547.

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 74530217 - 2² = 74530213 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74530217.

It is not an unprimeable number, because it can be changed into a prime (74530213) 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, 398 + ... + 12215.

It is an arithmetic number, because the mean of its divisors is an integer number (9838920).

Almost surely, 2^74530217 is an apocalyptic number.

It is an amenable number.

74530217 is a deficient number, since it is larger than the sum of its proper divisors (4181143).

74530217 is a wasteful number, since it uses less digits than its factorization.

74530217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12943.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 74530217 is about 8633.0884971718. The cubic root of 74530217 is about 420.8339759447.

It can be divided in two parts, 74530 and 217, that added together give a palindrome (74747).

The spelling of 74530217 in words is "seventy-four million, five hundred thirty thousand, two hundred seventeen".