776770117 has 4 divisors (see below), whose sum is σ = 777240556. Its totient is φ = 776299680.

The previous prime is 776770109. The next prime is 776770147. The reversal of 776770117 is 711077677.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 711077677 = 7499 ⋅94823.

It can be written as a sum of positive squares in 2 ways, for example, as 459716481 + 317053636 = 21441^2 + 17806^2 .

It is a cyclic number.

It is not a de Polignac number, because 776770117 - 2³ = 776770109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (776770147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232734 + ... + 236047.

It is an arithmetic number, because the mean of its divisors is an integer number (194310139).

Almost surely, 2^776770117 is an apocalyptic number.

It is an amenable number.

776770117 is a deficient number, since it is larger than the sum of its proper divisors (470439).

776770117 is a wasteful number, since it uses less digits than its factorization.

776770117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470438.

The product of its (nonzero) digits is 100842, while the sum is 43.

The square root of 776770117 is about 27870.5959211496. The cubic root of 776770117 is about 919.2440691088.

The spelling of 776770117 in words is "seven hundred seventy-six million, seven hundred seventy thousand, one hundred seventeen".