74397173 has 4 divisors (see below), whose sum is σ = 74420640. Its totient is φ = 74373708.

The previous prime is 74397163. The next prime is 74397227. The reversal of 74397173 is 37179347.

It is a happy number.

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: 37179347 = 991 ⋅37517.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74397173 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 74397173.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74397163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6065 + ... + 13622.

It is an arithmetic number, because the mean of its divisors is an integer number (18605160).

Almost surely, 2^74397173 is an apocalyptic number.

It is an amenable number.

74397173 is a deficient number, since it is larger than the sum of its proper divisors (23467).

74397173 is a wasteful number, since it uses less digits than its factorization.

74397173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23466.

The product of its digits is 111132, while the sum is 41.

The square root of 74397173 is about 8625.3795858501. The cubic root of 74397173 is about 420.5834163443.

The spelling of 74397173 in words is "seventy-four million, three hundred ninety-seven thousand, one hundred seventy-three".