8643657214 has 4 divisors (see below), whose sum is σ = 12965485824. Its totient is φ = 4321828606.

The previous prime is 8643657167. The next prime is 8643657233. The reversal of 8643657214 is 4127563468.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×8643657214³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2160914302 + ... + 2160914305.

It is an arithmetic number, because the mean of its divisors is an integer number (3241371456).

Almost surely, 2^8643657214 is an apocalyptic number.

8643657214 is a deficient number, since it is larger than the sum of its proper divisors (4321828610).

8643657214 is a wasteful number, since it uses less digits than its factorization.

8643657214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4321828609.

The product of its digits is 967680, while the sum is 46.

The square root of 8643657214 is about 92971.2709066623. The cubic root of 8643657214 is about 2052.2606205398.

The spelling of 8643657214 in words is "eight billion, six hundred forty-three million, six hundred fifty-seven thousand, two hundred fourteen".