8720458631 has 16 divisors (see below), whose sum is σ = 9051264000. Its totient is φ = 8396240160.

The previous prime is 8720458619. The next prime is 8720458639. The reversal of 8720458631 is 1368540278.

8720458631 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8720458631 is a prime.

It is a super-2 number, since 2×8720458631² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8720458639) 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 15 ways as a sum of consecutive naturals, for example, 1662545 + ... + 1667781.

It is an arithmetic number, because the mean of its divisors is an integer number (565704000).

Almost surely, 2^8720458631 is an apocalyptic number.

8720458631 is a deficient number, since it is larger than the sum of its proper divisors (330805369).

8720458631 is a wasteful number, since it uses less digits than its factorization.

8720458631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5854.

The product of its (nonzero) digits is 322560, while the sum is 44.

The square root of 8720458631 is about 93383.3959063387. The cubic root of 8720458631 is about 2058.3210178803.

The spelling of 8720458631 in words is "eight billion, seven hundred twenty million, four hundred fifty-eight thousand, six hundred thirty-one".