76856713 has 2 divisors, whose sum is σ = 76856714. Its totient is φ = 76856712.

The previous prime is 76856701. The next prime is 76856743. The reversal of 76856713 is 31765867.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69089344 + 7767369 = 8312^2 + 2787^2 .

It is a cyclic number.

It is not a de Polignac number, because 76856713 - 2²¹ = 74759561 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 76856713.

It is not a weakly prime, because it can be changed into another prime (76856743) 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 as a sum of consecutive naturals, namely, 38428356 + 38428357.

It is an arithmetic number, because the mean of its divisors is an integer number (38428357).

Almost surely, 2^76856713 is an apocalyptic number.

It is an amenable number.

76856713 is a deficient number, since it is larger than the sum of its proper divisors (1).

76856713 is an equidigital number, since it uses as much as digits as its factorization.

76856713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 211680, while the sum is 43.

The square root of 76856713 is about 8766.7960510097. The cubic root of 76856713 is about 425.1680313656.

The spelling of 76856713 in words is "seventy-six million, eight hundred fifty-six thousand, seven hundred thirteen".