8457688215 has 24 divisors (see below), whose sum is σ = 15431573040. Its totient is φ = 4273357824.

The previous prime is 8457688153. The next prime is 8457688223. The reversal of 8457688215 is 5128867548.

It is not a de Polignac number, because 8457688215 - 2¹⁵ = 8457655447 is a prime.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 4945162 + ... + 4946871.

It is an arithmetic number, because the mean of its divisors is an integer number (642982210).

Almost surely, 2^8457688215 is an apocalyptic number.

8457688215 is a deficient number, since it is larger than the sum of its proper divisors (6973884825).

8457688215 is a wasteful number, since it uses less digits than its factorization.

8457688215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9892063 (or 9892060 counting only the distinct ones).

The product of its digits is 4300800, while the sum is 54.

The square root of 8457688215 is about 91965.6904231138. The cubic root of 8457688215 is about 2037.4356005590.

The spelling of 8457688215 in words is "eight billion, four hundred fifty-seven million, six hundred eighty-eight thousand, two hundred fifteen".