71984805 has 8 divisors (see below), whose sum is σ = 115175712. Its totient is φ = 38391888.

The previous prime is 71984771. The next prime is 71984813. The reversal of 71984805 is 50848917.

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

It is not a de Polignac number, because 71984805 - 2¹² = 71980709 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2399479 + ... + 2399508.

It is an arithmetic number, because the mean of its divisors is an integer number (14396964).

Almost surely, 2^71984805 is an apocalyptic number.

It is an amenable number.

71984805 is a deficient number, since it is larger than the sum of its proper divisors (43190907).

71984805 is a wasteful number, since it uses less digits than its factorization.

71984805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4798995.

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 71984805 is about 8484.3859530316. The cubic root of 71984805 is about 415.9874969276.

The spelling of 71984805 in words is "seventy-one million, nine hundred eighty-four thousand, eight hundred five".