8720534756 has 12 divisors (see below), whose sum is σ = 15381101568. Its totient is φ = 4325934312.

The previous prime is 8720534749. The next prime is 8720534783. The reversal of 8720534756 is 6574350278.

It is a self number, because there is not a number n which added to its sum of digits gives 8720534756.

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, 8582696 + ... + 8583711.

It is an arithmetic number, because the mean of its divisors is an integer number (1281758464).

Almost surely, 2^8720534756 is an apocalyptic number.

It is an amenable number.

8720534756 is a deficient number, since it is larger than the sum of its proper divisors (6660566812).

8720534756 is a wasteful number, since it uses less digits than its factorization.

8720534756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17166538 (or 17166536 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 47.

The square root of 8720534756 is about 93383.8034993221. The cubic root of 8720534756 is about 2058.3270072148.

The spelling of 8720534756 in words is "eight billion, seven hundred twenty million, five hundred thirty-four thousand, seven hundred fifty-six".