8534684643 has 16 divisors (see below), whose sum is σ = 11572548000. Its totient is φ = 5593409280.

The previous prime is 8534684621. The next prime is 8534684701. The reversal of 8534684643 is 3464864358.

It is a happy number.

It is not a de Polignac number, because 8534684643 - 2²¹ = 8532587491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8534684603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 344703 + ... + 368631.

It is an arithmetic number, because the mean of its divisors is an integer number (723284250).

Almost surely, 2^8534684643 is an apocalyptic number.

8534684643 is a deficient number, since it is larger than the sum of its proper divisors (3037863357).

8534684643 is a wasteful number, since it uses less digits than its factorization.

8534684643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25942.

The product of its digits is 6635520, while the sum is 51.

The square root of 8534684643 is about 92383.3569589242. The cubic root of 8534684643 is about 2043.5996808295.

The spelling of 8534684643 in words is "eight billion, five hundred thirty-four million, six hundred eighty-four thousand, six hundred forty-three".