8266563387 has 12 divisors (see below), whose sum is σ = 11941380880. Its totient is φ = 5510677968.

The previous prime is 8266563373. The next prime is 8266563443. The reversal of 8266563387 is 7833656628.

It is not a de Polignac number, because 8266563387 - 2¹⁰ = 8266562363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8266563287) 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, 241314 + ... + 273432.

Almost surely, 2^8266563387 is an apocalyptic number.

8266563387 is a deficient number, since it is larger than the sum of its proper divisors (3674817493).

8266563387 is a wasteful number, since it uses less digits than its factorization.

8266563387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60722 (or 60719 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 54.

The square root of 8266563387 is about 90920.6433490217. The cubic root of 8266563387 is about 2021.9713613510.

The spelling of 8266563387 in words is "eight billion, two hundred sixty-six million, five hundred sixty-three thousand, three hundred eighty-seven".