8705657481 has 32 divisors (see below), whose sum is σ = 12759828480. Its totient is φ = 5255078400.

The previous prime is 8705657479. The next prime is 8705657497. The reversal of 8705657481 is 1847565078.

It is a happy number.

It is not a de Polignac number, because 8705657481 - 2¹ = 8705657479 is a prime.

It is a super-2 number, since 2×8705657481² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8705657461) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2726596 + ... + 2729786.

It is an arithmetic number, because the mean of its divisors is an integer number (398744640).

Almost surely, 2^8705657481 is an apocalyptic number.

It is an amenable number.

8705657481 is a deficient number, since it is larger than the sum of its proper divisors (4054170999).

8705657481 is a wasteful number, since it uses less digits than its factorization.

8705657481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5317.

The product of its (nonzero) digits is 1881600, while the sum is 51.

The square root of 8705657481 is about 93304.1128836237. The cubic root of 8705657481 is about 2057.1558356358.

The spelling of 8705657481 in words is "eight billion, seven hundred five million, six hundred fifty-seven thousand, four hundred eighty-one".