778060073 has 6 divisors (see below), whose sum is σ = 905090346. Its totient is φ = 666908592.

The previous prime is 778060067. The next prime is 778060093. The reversal of 778060073 is 370060877.

It can be written as a sum of positive squares in only one way, i.e., 726679849 + 51380224 = 26957^2 + 7168^2 .

It is not a de Polignac number, because 778060073 - 2⁸ = 778059817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (778060033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7939340 + ... + 7939437.

It is an arithmetic number, because the mean of its divisors is an integer number (150848391).

Almost surely, 2^778060073 is an apocalyptic number.

It is an amenable number.

778060073 is a deficient number, since it is larger than the sum of its proper divisors (127030273).

778060073 is a wasteful number, since it uses less digits than its factorization.

778060073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15878791 (or 15878784 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 38.

The square root of 778060073 is about 27893.7282018736. The cubic root of 778060073 is about 919.7526402566.

The spelling of 778060073 in words is "seven hundred seventy-eight million, sixty thousand, seventy-three".