76856111 has 2 divisors, whose sum is σ = 76856112. Its totient is φ = 76856110.

The previous prime is 76856081. The next prime is 76856113. The reversal of 76856111 is 11165867.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76856111 is a prime.

Together with 76856113, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76856113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38428055 + 38428056.

It is an arithmetic number, because the mean of its divisors is an integer number (38428056).

Almost surely, 2^76856111 is an apocalyptic number.

76856111 is a deficient number, since it is larger than the sum of its proper divisors (1).

76856111 is an equidigital number, since it uses as much as digits as its factorization.

76856111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 35.

The square root of 76856111 is about 8766.7617168485. The cubic root of 76856111 is about 425.1669212833.

It can be divided in two parts, 76856 and 111, that added together give a palindrome (76967).

The spelling of 76856111 in words is "seventy-six million, eight hundred fifty-six thousand, one hundred eleven".