71768611 has 4 divisors (see below), whose sum is σ = 75990312. Its totient is φ = 67546912.

The previous prime is 71768581. The next prime is 71768617. The reversal of 71768611 is 11686717.

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

It is a cyclic number.

It is not a de Polignac number, because 71768611 - 2²³ = 63380003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71768617) 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 3 ways as a sum of consecutive naturals, for example, 2110825 + ... + 2110858.

It is an arithmetic number, because the mean of its divisors is an integer number (18997578).

Almost surely, 2^71768611 is an apocalyptic number.

71768611 is a deficient number, since it is larger than the sum of its proper divisors (4221701).

71768611 is a wasteful number, since it uses less digits than its factorization.

71768611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4221700.

The product of its digits is 14112, while the sum is 37.

The square root of 71768611 is about 8471.6356744138. The cubic root of 71768611 is about 415.5706303161.

The spelling of 71768611 in words is "seventy-one million, seven hundred sixty-eight thousand, six hundred eleven".