806756643772 has 24 divisors (see below), whose sum is σ = 1486301901840. Its totient is φ = 382103850240.

The previous prime is 806756643761. The next prime is 806756643817. The reversal of 806756643772 is 277346657608.

It is a self number, because there is not a number n which added to its sum of digits gives 806756643772.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57108 + ... + 1271524.

It is an arithmetic number, because the mean of its divisors is an integer number (61929245910).

Almost surely, 2^806756643772 is an apocalyptic number.

It is an amenable number.

806756643772 is a deficient number, since it is larger than the sum of its proper divisors (679545258068).

806756643772 is a wasteful number, since it uses less digits than its factorization.

806756643772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223181 (or 1223179 counting only the distinct ones).

The product of its (nonzero) digits is 71124480, while the sum is 61.

The spelling of 806756643772 in words is "eight hundred six billion, seven hundred fifty-six million, six hundred forty-three thousand, seven hundred seventy-two".