8712971646 has 64 divisors (see below), whose sum is σ = 17899854336. Its totient is φ = 2826704000.

The previous prime is 8712971633. The next prime is 8712971647. The reversal of 8712971646 is 6461792178.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8712971647) 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, 15642400 + ... + 15642956.

It is an arithmetic number, because the mean of its divisors is an integer number (279685224).

Almost surely, 2^8712971646 is an apocalyptic number.

8712971646 is an abundant number, since it is smaller than the sum of its proper divisors (9186882690).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8712971646 is a wasteful number, since it uses less digits than its factorization.

8712971646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057.

The product of its digits is 1016064, while the sum is 51.

The square root of 8712971646 is about 93343.2999523801. The cubic root of 8712971646 is about 2057.7317892772.

The spelling of 8712971646 in words is "eight billion, seven hundred twelve million, nine hundred seventy-one thousand, six hundred forty-six".