74966321 has 4 divisors (see below), whose sum is σ = 75090432. Its totient is φ = 74842212.

The previous prime is 74966293. The next prime is 74966393. The reversal of 74966321 is 12366947.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12366947 = 397 ⋅31151.

It is a cyclic number.

It is not a de Polignac number, because 74966321 - 2¹⁴ = 74949937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74963321) 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, 61145 + ... + 62358.

It is an arithmetic number, because the mean of its divisors is an integer number (18772608).

Almost surely, 2^74966321 is an apocalyptic number.

It is an amenable number.

74966321 is a deficient number, since it is larger than the sum of its proper divisors (124111).

74966321 is a wasteful number, since it uses less digits than its factorization.

74966321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124110.

The product of its digits is 54432, while the sum is 38.

The square root of 74966321 is about 8658.3093615324. The cubic root of 74966321 is about 421.6531988248.

The spelling of 74966321 in words is "seventy-four million, nine hundred sixty-six thousand, three hundred twenty-one".