74523321 has 20 divisors (see below), whose sum is σ = 112142800. Its totient is φ = 49317336.

The previous prime is 74523277. The next prime is 74523367. The reversal of 74523321 is 12332547.

It is not a de Polignac number, because 74523321 - 2¹⁹ = 73999033 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74523221) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7950 + ... + 14568.

It is an arithmetic number, because the mean of its divisors is an integer number (5607140).

Almost surely, 2^74523321 is an apocalyptic number.

It is an amenable number.

74523321 is a deficient number, since it is larger than the sum of its proper divisors (37619479).

74523321 is a wasteful number, since it uses less digits than its factorization.

74523321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6770 (or 6761 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 74523321 is about 8632.6890943668. The cubic root of 74523321 is about 420.8209961507.

Adding to 74523321 its reverse (12332547), we get a palindrome (86855868).

The spelling of 74523321 in words is "seventy-four million, five hundred twenty-three thousand, three hundred twenty-one".