77376913 has 2 divisors, whose sum is σ = 77376914. Its totient is φ = 77376912.

The previous prime is 77376889. The next prime is 77376917. The reversal of 77376913 is 31967377.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54937744 + 22439169 = 7412^2 + 4737^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77376913 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77376913.

It is not a weakly prime, because it can be changed into another prime (77376917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38688456 + 38688457.

It is an arithmetic number, because the mean of its divisors is an integer number (38688457).

Almost surely, 2^77376913 is an apocalyptic number.

It is an amenable number.

77376913 is a deficient number, since it is larger than the sum of its proper divisors (1).

77376913 is an equidigital number, since it uses as much as digits as its factorization.

77376913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 166698, while the sum is 43.

The square root of 77376913 is about 8796.4147810344. The cubic root of 77376913 is about 426.1251166215.

The spelling of 77376913 in words is "seventy-seven million, three hundred seventy-six thousand, nine hundred thirteen".