74712171 has 4 divisors (see below), whose sum is σ = 99616232. Its totient is φ = 49808112.

The previous prime is 74712151. The next prime is 74712173. The reversal of 74712171 is 17121747.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17121747 = 3 ⋅5707249.

It is not a de Polignac number, because 74712171 - 2¹⁴ = 74695787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74712173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12452026 + ... + 12452031.

It is an arithmetic number, because the mean of its divisors is an integer number (24904058).

Almost surely, 2^74712171 is an apocalyptic number.

74712171 is a deficient number, since it is larger than the sum of its proper divisors (24904061).

74712171 is a wasteful number, since it uses less digits than its factorization.

74712171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24904060.

The product of its digits is 2744, while the sum is 30.

The square root of 74712171 is about 8643.6202484838. The cubic root of 74712171 is about 421.1761646545.

The spelling of 74712171 in words is "seventy-four million, seven hundred twelve thousand, one hundred seventy-one".