77385673 has 2 divisors, whose sum is σ = 77385674. Its totient is φ = 77385672.

The previous prime is 77385667. The next prime is 77385691. The reversal of 77385673 is 37658377.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59644729 + 17740944 = 7723^2 + 4212^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77385673 is a prime.

It is not a weakly prime, because it can be changed into another prime (77385643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38692836 + 38692837.

It is an arithmetic number, because the mean of its divisors is an integer number (38692837).

Almost surely, 2^77385673 is an apocalyptic number.

It is an amenable number.

77385673 is a deficient number, since it is larger than the sum of its proper divisors (1).

77385673 is an equidigital number, since it uses as much as digits as its factorization.

77385673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 740880, while the sum is 46.

The square root of 77385673 is about 8796.9126970773. The cubic root of 77385673 is about 426.1411968493.

The spelling of 77385673 in words is "seventy-seven million, three hundred eighty-five thousand, six hundred seventy-three".