77716343 has 2 divisors, whose sum is σ = 77716344. Its totient is φ = 77716342.

The previous prime is 77716339. The next prime is 77716357. The reversal of 77716343 is 34361777.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77716343 - 2² = 77716339 is a prime.

It is a Sophie Germain prime.

It is equal to p_4543895 and since 77716343 and 4543895 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 77716297 and 77716306.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77716363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38858171 + 38858172.

It is an arithmetic number, because the mean of its divisors is an integer number (38858172).

Almost surely, 2^77716343 is an apocalyptic number.

77716343 is a deficient number, since it is larger than the sum of its proper divisors (1).

77716343 is an equidigital number, since it uses as much as digits as its factorization.

77716343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 74088, while the sum is 38.

The square root of 77716343 is about 8815.6873243100. The cubic root of 77716343 is about 426.7473033493.

The spelling of 77716343 in words is "seventy-seven million, seven hundred sixteen thousand, three hundred forty-three".