8634426563 has 12 divisors (see below), whose sum is σ = 10390479840. Its totient is φ = 7145731152.

The previous prime is 8634426539. The next prime is 8634426629. The reversal of 8634426563 is 3656244368.

It is not a de Polignac number, because 8634426563 - 2¹⁰ = 8634425539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8634426533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3036731 + ... + 3039572.

It is an arithmetic number, because the mean of its divisors is an integer number (865873320).

Almost surely, 2^8634426563 is an apocalyptic number.

8634426563 is a deficient number, since it is larger than the sum of its proper divisors (1756053277).

8634426563 is a wasteful number, since it uses less digits than its factorization.

8634426563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6076346 (or 6076339 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 47.

The square root of 8634426563 is about 92921.6151549251. The cubic root of 8634426563 is about 2051.5298168813.

The spelling of 8634426563 in words is "eight billion, six hundred thirty-four million, four hundred twenty-six thousand, five hundred sixty-three".