8213686811 has 8 divisors (see below), whose sum is σ = 8961134448. Its totient is φ = 7466364000.

The previous prime is 8213686777. The next prime is 8213686853. The reversal of 8213686811 is 1186863128.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8213686811 - 2¹⁰ = 8213685787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8213688811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154421 + ... + 200681.

It is an arithmetic number, because the mean of its divisors is an integer number (1120141806).

Almost surely, 2^8213686811 is an apocalyptic number.

8213686811 is a deficient number, since it is larger than the sum of its proper divisors (747447637).

8213686811 is a wasteful number, since it uses less digits than its factorization.

8213686811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62413.

The product of its digits is 110592, while the sum is 44.

The square root of 8213686811 is about 90629.3926438879. The cubic root of 8213686811 is about 2017.6509971249.

The spelling of 8213686811 in words is "eight billion, two hundred thirteen million, six hundred eighty-six thousand, eight hundred eleven".