71643874 has 8 divisors (see below), whose sum is σ = 107509248. Its totient is φ = 35807460.

The previous prime is 71643853. The next prime is 71643893. The reversal of 71643874 is 47834617.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 679 + ... + 11989.

It is an arithmetic number, because the mean of its divisors is an integer number (13438656).

Almost surely, 2^71643874 is an apocalyptic number.

71643874 is a deficient number, since it is larger than the sum of its proper divisors (35865374).

71643874 is a wasteful number, since it uses less digits than its factorization.

71643874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14480.

The product of its digits is 112896, while the sum is 40.

The square root of 71643874 is about 8464.2704351881. The cubic root of 71643874 is about 415.3297306912.

The spelling of 71643874 in words is "seventy-one million, six hundred forty-three thousand, eight hundred seventy-four".