77713193 has 2 divisors, whose sum is σ = 77713194. Its totient is φ = 77713192.

The previous prime is 77713177. The next prime is 77713201. The reversal of 77713193 is 39131777.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57714409 + 19998784 = 7597^2 + 4472^2 .

It is a cyclic number.

It is not a de Polignac number, because 77713193 - 2⁴ = 77713177 is a prime.

It is not a weakly prime, because it can be changed into another prime (77713123) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38856596 + 38856597.

It is an arithmetic number, because the mean of its divisors is an integer number (38856597).

Almost surely, 2^77713193 is an apocalyptic number.

It is an amenable number.

77713193 is a deficient number, since it is larger than the sum of its proper divisors (1).

77713193 is an equidigital number, since it uses as much as digits as its factorization.

77713193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27783, while the sum is 38.

The square root of 77713193 is about 8815.5086637131. The cubic root of 77713193 is about 426.7415376287.

The spelling of 77713193 in words is "seventy-seven million, seven hundred thirteen thousand, one hundred ninety-three".