766520636 has 12 divisors (see below), whose sum is σ = 1533041328. Its totient is φ = 328508832.

The previous prime is 766520621. The next prime is 766520717. The reversal of 766520636 is 636025667.

766520636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

766520636 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 766520593 and 766520602.

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, 13687841 + ... + 13687896.

It is an arithmetic number, because the mean of its divisors is an integer number (127753444).

Almost surely, 2^766520636 is an apocalyptic number.

It is an amenable number.

766520636 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

766520636 is a wasteful number, since it uses less digits than its factorization.

766520636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27375748 (or 27375746 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 41.

The square root of 766520636 is about 27686.1090801868. The cubic root of 766520636 is about 915.1830129509.

The spelling of 766520636 in words is "seven hundred sixty-six million, five hundred twenty thousand, six hundred thirty-six".