8720708753 has 4 divisors (see below), whose sum is σ = 8740942848. Its totient is φ = 8700474660.

The previous prime is 8720708663. The next prime is 8720708761. The reversal of 8720708753 is 3578070278.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8720708753 - 2²² = 8716514449 is a prime.

It is a super-2 number, since 2×8720708753² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8720708698 and 8720708707.

It is not an unprimeable number, because it can be changed into a prime (8720708653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10116401 + ... + 10117262.

It is an arithmetic number, because the mean of its divisors is an integer number (2185235712).

Almost surely, 2^8720708753 is an apocalyptic number.

It is an amenable number.

8720708753 is a deficient number, since it is larger than the sum of its proper divisors (20234095).

8720708753 is a wasteful number, since it uses less digits than its factorization.

8720708753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20234094.

The product of its (nonzero) digits is 658560, while the sum is 47.

The square root of 8720708753 is about 93384.7351176840. The cubic root of 8720708753 is about 2058.3406967554.

The spelling of 8720708753 in words is "eight billion, seven hundred twenty million, seven hundred eight thousand, seven hundred fifty-three".