76776671 has 2 divisors, whose sum is σ = 76776672. Its totient is φ = 76776670.

The previous prime is 76776647. The next prime is 76776731. The reversal of 76776671 is 17667767.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 76776671 - 2²⁶ = 9667807 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76776871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38388335 + 38388336.

It is an arithmetic number, because the mean of its divisors is an integer number (38388336).

Almost surely, 2^76776671 is an apocalyptic number.

76776671 is a deficient number, since it is larger than the sum of its proper divisors (1).

76776671 is an equidigital number, since it uses as much as digits as its factorization.

76776671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 518616, while the sum is 47.

The square root of 76776671 is about 8762.2297961193. The cubic root of 76776671 is about 425.0203837974.

The spelling of 76776671 in words is "seventy-six million, seven hundred seventy-six thousand, six hundred seventy-one".