77310073 has 2 divisors, whose sum is σ = 77310074. Its totient is φ = 77310072.

The previous prime is 77310029. The next prime is 77310083. The reversal of 77310073 is 37001377.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74166544 + 3143529 = 8612^2 + 1773^2 .

It is a cyclic number.

It is not a de Polignac number, because 77310073 - 2¹³ = 77301881 is a prime.

It is not a weakly prime, because it can be changed into another prime (77310083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38655036 + 38655037.

It is an arithmetic number, because the mean of its divisors is an integer number (38655037).

Almost surely, 2^77310073 is an apocalyptic number.

It is an amenable number.

77310073 is a deficient number, since it is larger than the sum of its proper divisors (1).

77310073 is an equidigital number, since it uses as much as digits as its factorization.

77310073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3087, while the sum is 28.

The square root of 77310073 is about 8792.6146850638. The cubic root of 77310073 is about 426.0023823035.

The spelling of 77310073 in words is "seventy-seven million, three hundred ten thousand, seventy-three".