71768018 has 16 divisors (see below), whose sum is σ = 123325440. Its totient is φ = 30684096.

The previous prime is 71768017. The next prime is 71768051. The reversal of 71768018 is 81086717.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71768017) 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, 143 + ... + 11981.

It is an arithmetic number, because the mean of its divisors is an integer number (7707840).

Almost surely, 2^71768018 is an apocalyptic number.

71768018 is a deficient number, since it is larger than the sum of its proper divisors (51557422).

71768018 is a wasteful number, since it uses less digits than its factorization.

71768018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12281.

The product of its (nonzero) digits is 18816, while the sum is 38.

The square root of 71768018 is about 8471.6006751971. The cubic root of 71768018 is about 415.5694857393.

The spelling of 71768018 in words is "seventy-one million, seven hundred sixty-eight thousand, eighteen".