74211871 has 4 divisors (see below), whose sum is σ = 74946744. Its totient is φ = 73477000.

The previous prime is 74211857. The next prime is 74211881. The reversal of 74211871 is 17811247.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17811247 = 421 ⋅42307.

It is a cyclic number.

It is not a de Polignac number, because 74211871 - 2⁷ = 74211743 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74211821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367285 + ... + 367486.

It is an arithmetic number, because the mean of its divisors is an integer number (18736686).

Almost surely, 2^74211871 is an apocalyptic number.

74211871 is a deficient number, since it is larger than the sum of its proper divisors (734873).

74211871 is a wasteful number, since it uses less digits than its factorization.

74211871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734872.

The product of its digits is 3136, while the sum is 31.

The square root of 74211871 is about 8614.6312167150. The cubic root of 74211871 is about 420.2339418536.

The spelling of 74211871 in words is "seventy-four million, two hundred eleven thousand, eight hundred seventy-one".