76078813 has 2 divisors, whose sum is σ = 76078814. Its totient is φ = 76078812.

The previous prime is 76078811. The next prime is 76078837. The reversal of 76078813 is 31887067.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54567769 + 21511044 = 7387^2 + 4638^2 .

It is an emirp because it is prime and its reverse (31887067) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76078813 - 2¹ = 76078811 is a prime.

Together with 76078811, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76078811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38039406 + 38039407.

It is an arithmetic number, because the mean of its divisors is an integer number (38039407).

Almost surely, 2^76078813 is an apocalyptic number.

It is an amenable number.

76078813 is a deficient number, since it is larger than the sum of its proper divisors (1).

76078813 is an equidigital number, since it uses as much as digits as its factorization.

76078813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 76078813 is about 8722.3169513610. The cubic root of 76078813 is about 423.7287280011.

The spelling of 76078813 in words is "seventy-six million, seventy-eight thousand, eight hundred thirteen".