71813361 has 8 divisors (see below), whose sum is σ = 95792544. Its totient is φ = 47854880.

The previous prime is 71813333. The next prime is 71813363. The reversal of 71813361 is 16331817.

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

It is a cyclic number.

It is not a de Polignac number, because 71813361 - 2⁹ = 71812849 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71813363) 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 7 ways as a sum of consecutive naturals, for example, 7045 + ... + 13901.

It is an arithmetic number, because the mean of its divisors is an integer number (11974068).

Almost surely, 2^71813361 is an apocalyptic number.

It is an amenable number.

71813361 is a deficient number, since it is larger than the sum of its proper divisors (23979183).

71813361 is a wasteful number, since it uses less digits than its factorization.

71813361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10351.

The product of its digits is 3024, while the sum is 30.

The square root of 71813361 is about 8474.2764292888. The cubic root of 71813361 is about 415.6569861828.

The spelling of 71813361 in words is "seventy-one million, eight hundred thirteen thousand, three hundred sixty-one".