776706736 has 80 divisors (see below), whose sum is σ = 1685447680. Its totient is φ = 344321280.

The previous prime is 776706731. The next prime is 776706737. The reversal of 776706736 is 637607677.

It is a happy number.

776706736 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 776706736.

It is not an unprimeable number, because it can be changed into a prime (776706731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1050655 + ... + 1051393.

It is an arithmetic number, because the mean of its divisors is an integer number (21068096).

Almost surely, 2^776706736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 776706736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (842723840).

776706736 is an abundant number, since it is smaller than the sum of its proper divisors (908740944).

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

776706736 is a wasteful number, since it uses less digits than its factorization.

776706736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954 (or 948 counting only the distinct ones).

The product of its (nonzero) digits is 1555848, while the sum is 49.

The square root of 776706736 is about 27869.4588393819. The cubic root of 776706736 is about 919.2190663476.

The spelling of 776706736 in words is "seven hundred seventy-six million, seven hundred six thousand, seven hundred thirty-six".