8640308534 has 48 divisors (see below), whose sum is σ = 15390543024. Its totient is φ = 3606220800.

The previous prime is 8640308533. The next prime is 8640308557. The reversal of 8640308534 is 4358030468.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 8640308491 and 8640308500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8640308533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 711554 + ... + 723594.

It is an arithmetic number, because the mean of its divisors is an integer number (320636313).

Almost surely, 2^8640308534 is an apocalyptic number.

8640308534 is a deficient number, since it is larger than the sum of its proper divisors (6750234490).

8640308534 is a wasteful number, since it uses less digits than its factorization.

8640308534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12273 (or 12260 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 41.

The square root of 8640308534 is about 92953.2599428336. The cubic root of 8640308534 is about 2051.9955609861.

The spelling of 8640308534 in words is "eight billion, six hundred forty million, three hundred eight thousand, five hundred thirty-four".