71918 has 16 divisors (see below), whose sum is σ = 134784. Its totient is φ = 27960.

The previous prime is 71917. The next prime is 71933. The reversal of 71918 is 81917.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80 + ... + 387.

It is an arithmetic number, because the mean of its divisors is an integer number (8424).

2⁷¹⁹¹⁸ is an apocalyptic number.

71918 is a deficient number, since it is larger than the sum of its proper divisors (62866).

71918 is a wasteful number, since it uses less digits than its factorization.

71918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487.

The product of its digits is 504, while the sum is 26.

The square root of 71918 is about 268.1753157917. The cubic root of 71918 is about 41.5858772326.

Subtracting 71918 from its reverse (81917), we obtain a palindrome (9999).

It can be divided in two parts, 719 and 18, that added together give a palindrome (737).

The spelling of 71918 in words is "seventy-one thousand, nine hundred eighteen".