8266638347 has 4 divisors (see below), whose sum is σ = 9018150936. Its totient is φ = 7515125760.

The previous prime is 8266638337. The next prime is 8266638361. The reversal of 8266638347 is 7438366628.

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 8266638347 - 2²⁶ = 8199529483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8266638337) 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, 375756278 + ... + 375756299.

It is an arithmetic number, because the mean of its divisors is an integer number (2254537734).

Almost surely, 2^8266638347 is an apocalyptic number.

8266638347 is a deficient number, since it is larger than the sum of its proper divisors (751512589).

8266638347 is a wasteful number, since it uses less digits than its factorization.

8266638347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751512588.

The product of its digits is 6967296, while the sum is 53.

The square root of 8266638347 is about 90921.0555757026. The cubic root of 8266638347 is about 2021.9774729803.

The spelling of 8266638347 in words is "eight billion, two hundred sixty-six million, six hundred thirty-eight thousand, three hundred forty-seven".