768660785 has 4 divisors (see below), whose sum is σ = 922392948. Its totient is φ = 614928624.

The previous prime is 768660773. The next prime is 768660787. The reversal of 768660785 is 587066867.

768660785 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: 587066867 = 61 ⋅9624047.

It can be written as a sum of positive squares in 2 ways, for example, as 115756081 + 652904704 = 10759^2 + 25552^2 .

It is a cyclic number.

It is not a de Polignac number, because 768660785 - 2¹² = 768656689 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (768660787) 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, 76866074 + ... + 76866083.

It is an arithmetic number, because the mean of its divisors is an integer number (230598237).

Almost surely, 2^768660785 is an apocalyptic number.

It is an amenable number.

768660785 is a deficient number, since it is larger than the sum of its proper divisors (153732163).

768660785 is a wasteful number, since it uses less digits than its factorization.

768660785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153732162.

The product of its (nonzero) digits is 3386880, while the sum is 53.

The square root of 768660785 is about 27724.7323702141. The cubic root of 768660785 is about 916.0339611144.

The spelling of 768660785 in words is "seven hundred sixty-eight million, six hundred sixty thousand, seven hundred eighty-five".