776730064 has 20 divisors (see below), whose sum is σ = 1641725280. Its totient is φ = 353059040.

The previous prime is 776730043. The next prime is 776730077. The reversal of 776730064 is 460037677.

It is a junction number, because it is equal to n+sod(n) for n = 776729999 and 776730026.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2206444 + ... + 2206795.

It is an arithmetic number, because the mean of its divisors is an integer number (82086264).

Almost surely, 2^776730064 is an apocalyptic number.

It is an amenable number.

776730064 is an abundant number, since it is smaller than the sum of its proper divisors (864995216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

776730064 is a wasteful number, since it uses less digits than its factorization.

776730064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4413258 (or 4413252 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 40.

The square root of 776730064 is about 27869.8773588977. The cubic root of 776730064 is about 919.2282690178.

The spelling of 776730064 in words is "seven hundred seventy-six million, seven hundred thirty thousand, sixty-four".