76811387 has 2 divisors, whose sum is σ = 76811388. Its totient is φ = 76811386.

The previous prime is 76811369. The next prime is 76811393. The reversal of 76811387 is 78311867.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 76811387 - 2⁸ = 76811131 is a prime.

It is not a weakly prime, because it can be changed into another prime (76811887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38405693 + 38405694.

It is an arithmetic number, because the mean of its divisors is an integer number (38405694).

Almost surely, 2^76811387 is an apocalyptic number.

76811387 is a deficient number, since it is larger than the sum of its proper divisors (1).

76811387 is an equidigital number, since it uses as much as digits as its factorization.

76811387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 41.

The square root of 76811387 is about 8764.2105748322. The cubic root of 76811387 is about 425.0844344354.

The spelling of 76811387 in words is "seventy-six million, eight hundred eleven thousand, three hundred eighty-seven".