776460820 has 12 divisors (see below), whose sum is σ = 1630567764. Its totient is φ = 310584320.

The previous prime is 776460803. The next prime is 776460863. The reversal of 776460820 is 28064677.

776460820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 382358916 + 394101904 = 19554^2 + 19852^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19411501 + ... + 19411540.

It is an arithmetic number, because the mean of its divisors is an integer number (135880647).

Almost surely, 2^776460820 is an apocalyptic number.

It is an amenable number.

776460820 is an abundant number, since it is smaller than the sum of its proper divisors (854106944).

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

776460820 is a wasteful number, since it uses less digits than its factorization.

776460820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38823050 (or 38823048 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 776460820 is about 27865.0465637508. The cubic root of 776460820 is about 919.1220436549.

The spelling of 776460820 in words is "seven hundred seventy-six million, four hundred sixty thousand, eight hundred twenty".