8701216571 has 4 divisors (see below), whose sum is σ = 8701480752. Its totient is φ = 8700952392.

The previous prime is 8701216529. The next prime is 8701216577. The reversal of 8701216571 is 1756121078.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 8701216571 - 2⁶ = 8701216507 is a prime.

It is a super-2 number, since 2×8701216571² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8701216577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74240 + ... + 151373.

It is an arithmetic number, because the mean of its divisors is an integer number (2175370188).

Almost surely, 2^8701216571 is an apocalyptic number.

8701216571 is a deficient number, since it is larger than the sum of its proper divisors (264181).

8701216571 is a wasteful number, since it uses less digits than its factorization.

8701216571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264180.

The product of its (nonzero) digits is 23520, while the sum is 38.

The square root of 8701216571 is about 93280.3118080123. The cubic root of 8701216571 is about 2056.8059789363.

The spelling of 8701216571 in words is "eight billion, seven hundred one million, two hundred sixteen thousand, five hundred seventy-one".