77968763 has 2 divisors, whose sum is σ = 77968764. Its totient is φ = 77968762.

The previous prime is 77968753. The next prime is 77968801. The reversal of 77968763 is 36786977.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77968763 - 2⁴ = 77968747 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (77968753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38984381 + 38984382.

It is an arithmetic number, because the mean of its divisors is an integer number (38984382).

Almost surely, 2^77968763 is an apocalyptic number.

77968763 is a deficient number, since it is larger than the sum of its proper divisors (1).

77968763 is an equidigital number, since it uses as much as digits as its factorization.

77968763 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2667168, while the sum is 53.

The square root of 77968763 is about 8829.9922423522. The cubic root of 77968763 is about 427.2088242127.

The spelling of 77968763 in words is "seventy-seven million, nine hundred sixty-eight thousand, seven hundred sixty-three".