8201287866 has 16 divisors (see below), whose sum is σ = 17367433344. Its totient is φ = 2572953024.

The previous prime is 8201287837. The next prime is 8201287879. The reversal of 8201287866 is 6687821028.

It is a super-2 number, since 2×8201287866² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40202290 + ... + 40202493.

It is an arithmetic number, because the mean of its divisors is an integer number (1085464584).

Almost surely, 2^8201287866 is an apocalyptic number.

8201287866 is an abundant number, since it is smaller than the sum of its proper divisors (9166145478).

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

8201287866 is a wasteful number, since it uses less digits than its factorization.

8201287866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80404805.

The product of its (nonzero) digits is 516096, while the sum is 48.

The square root of 8201287866 is about 90560.9621525743. The cubic root of 8201287866 is about 2016.6352396107.

The spelling of 8201287866 in words is "eight billion, two hundred one million, two hundred eighty-seven thousand, eight hundred sixty-six".