8620472731 has 8 divisors (see below), whose sum is σ = 9327587024. Its totient is φ = 7919644320.

The previous prime is 8620472719. The next prime is 8620472743. The reversal of 8620472731 is 1372740268.

8620472731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (8620472719) and next prime (8620472743).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8620472731 is a prime.

It is a super-2 number, since 2×8620472731² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8620472431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1568616 + ... + 1574101.

It is an arithmetic number, because the mean of its divisors is an integer number (1165948378).

Almost surely, 2^8620472731 is an apocalyptic number.

8620472731 is a deficient number, since it is larger than the sum of its proper divisors (707114293).

8620472731 is a wasteful number, since it uses less digits than its factorization.

8620472731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3142941.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 8620472731 is about 92846.5009087580. The cubic root of 8620472731 is about 2050.4240828768.

The spelling of 8620472731 in words is "eight billion, six hundred twenty million, four hundred seventy-two thousand, seven hundred thirty-one".