780560779 has 4 divisors (see below), whose sum is σ = 781083000. Its totient is φ = 780038560.

The previous prime is 780560777. The next prime is 780560783. The reversal of 780560779 is 977065087.

780560779 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 977065087 = 67 ⋅14583061.

It is a cyclic number.

It is not a de Polignac number, because 780560779 - 2¹ = 780560777 is a prime.

It is a super-3 number, since 3×780560779³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (780560771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258862 + ... + 261859.

It is an arithmetic number, because the mean of its divisors is an integer number (195270750).

Almost surely, 2^780560779 is an apocalyptic number.

780560779 is a deficient number, since it is larger than the sum of its proper divisors (522221).

780560779 is a wasteful number, since it uses less digits than its factorization.

780560779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522220.

The product of its (nonzero) digits is 740880, while the sum is 49.

The square root of 780560779 is about 27938.5178382820. The cubic root of 780560779 is about 920.7369563763.

The spelling of 780560779 in words is "seven hundred eighty million, five hundred sixty thousand, seven hundred seventy-nine".