71768847 has 4 divisors (see below), whose sum is σ = 95691800. Its totient is φ = 47845896.

The previous prime is 71768831. The next prime is 71768857. The reversal of 71768847 is 74886717.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 71768847 - 2⁴ = 71768831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71768796 and 71768805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71768857) 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, 11961472 + ... + 11961477.

It is an arithmetic number, because the mean of its divisors is an integer number (23922950).

Almost surely, 2^71768847 is an apocalyptic number.

71768847 is a deficient number, since it is larger than the sum of its proper divisors (23922953).

71768847 is a wasteful number, since it uses less digits than its factorization.

71768847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23922952.

The product of its digits is 526848, while the sum is 48.

The square root of 71768847 is about 8471.6496032355. The cubic root of 71768847 is about 415.5710858289.

The spelling of 71768847 in words is "seventy-one million, seven hundred sixty-eight thousand, eight hundred forty-seven".