71641318 has 16 divisors (see below), whose sum is σ = 123213600. Its totient is φ = 30603456.

The previous prime is 71641313. The next prime is 71641321. The reversal of 71641318 is 81314617.

It is a self number, because there is not a number n which added to its sum of digits gives 71641318.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71641313) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3793 + ... + 12556.

It is an arithmetic number, because the mean of its divisors is an integer number (7700850).

Almost surely, 2^71641318 is an apocalyptic number.

71641318 is a deficient number, since it is larger than the sum of its proper divisors (51572282).

71641318 is a wasteful number, since it uses less digits than its factorization.

71641318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16671.

The product of its digits is 4032, while the sum is 31.

The square root of 71641318 is about 8464.1194462271. The cubic root of 71641318 is about 415.3247914672.

The spelling of 71641318 in words is "seventy-one million, six hundred forty-one thousand, three hundred eighteen".