8267487221 has 12 divisors (see below), whose sum is σ = 9680980320. Its totient is φ = 7039481400.

The previous prime is 8267487203. The next prime is 8267487257. The reversal of 8267487221 is 1227847628.

It is a happy number.

It is not a de Polignac number, because 8267487221 - 2¹⁴ = 8267470837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8267487121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 551291 + ... + 566088.

It is an arithmetic number, because the mean of its divisors is an integer number (806748360).

Almost surely, 2^8267487221 is an apocalyptic number.

It is an amenable number.

8267487221 is a deficient number, since it is larger than the sum of its proper divisors (1413493099).

8267487221 is a wasteful number, since it uses less digits than its factorization.

8267487221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117544 (or 1117537 counting only the distinct ones).

The product of its digits is 602112, while the sum is 47.

The square root of 8267487221 is about 90925.7236484813. The cubic root of 8267487221 is about 2022.0466806916.

The spelling of 8267487221 in words is "eight billion, two hundred sixty-seven million, four hundred eighty-seven thousand, two hundred twenty-one".