8672640736 has 24 divisors (see below), whose sum is σ = 17163667584. Its totient is φ = 4313614080.

The previous prime is 8672640709. The next prime is 8672640799. The reversal of 8672640736 is 6370462768.

It is a self number, because there is not a number n which added to its sum of digits gives 8672640736.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 703365 + ... + 715588.

It is an arithmetic number, because the mean of its divisors is an integer number (715152816).

Almost surely, 2^8672640736 is an apocalyptic number.

It is an amenable number.

8672640736 is a deficient number, since it is larger than the sum of its proper divisors (8491026848).

8672640736 is a wasteful number, since it uses less digits than its factorization.

8672640736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419154 (or 1419146 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 49.

The square root of 8672640736 is about 93127.0139970138. The cubic root of 8672640736 is about 2054.5519107162.

The spelling of 8672640736 in words is "eight billion, six hundred seventy-two million, six hundred forty thousand, seven hundred thirty-six".