766220836 has 12 divisors (see below), whose sum is σ = 1341144028. Its totient is φ = 383036832.

The previous prime is 766220789. The next prime is 766220843. The reversal of 766220836 is 638022667.

766220836 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 340623936 + 425596900 = 18456^2 + 20630^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

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, 9850 + ... + 40366.

Almost surely, 2^766220836 is an apocalyptic number.

It is an amenable number.

766220836 is a deficient number, since it is larger than the sum of its proper divisors (574923192).

766220836 is a wasteful number, since it uses less digits than its factorization.

766220836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36798 (or 36796 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 766220836 is about 27680.6942832003. The cubic root of 766220836 is about 915.0636825495.

The spelling of 766220836 in words is "seven hundred sixty-six million, two hundred twenty thousand, eight hundred thirty-six".