77322313 has 2 divisors, whose sum is σ = 77322314. Its totient is φ = 77322312.

The previous prime is 77322293. The next prime is 77322331. The reversal of 77322313 is 31322377.

Together with next prime (77322331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62599744 + 14722569 = 7912^2 + 3837^2 .

It is a cyclic number.

It is not a de Polignac number, because 77322313 - 2²⁵ = 43767881 is a prime.

It is not a weakly prime, because it can be changed into another prime (77322353) 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, 38661156 + 38661157.

It is an arithmetic number, because the mean of its divisors is an integer number (38661157).

Almost surely, 2^77322313 is an apocalyptic number.

It is an amenable number.

77322313 is a deficient number, since it is larger than the sum of its proper divisors (1).

77322313 is an equidigital number, since it uses as much as digits as its factorization.

77322313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5292, while the sum is 28.

The square root of 77322313 is about 8793.3106962054. The cubic root of 77322313 is about 426.0248631774.

The spelling of 77322313 in words is "seventy-seven million, three hundred twenty-two thousand, three hundred thirteen".