8629643 has 4 divisors (see below), whose sum is σ = 9414168. Its totient is φ = 7845120.

The previous prime is 8629637. The next prime is 8629651. The reversal of 8629643 is 3469268.

8629643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8629643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8629597 and 8629606.

It is not an unprimeable number, because it can be changed into a prime (8629613) 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, 392246 + ... + 392267.

It is an arithmetic number, because the mean of its divisors is an integer number (2353542).

Almost surely, 2^8629643 is an apocalyptic number.

8629643 is a deficient number, since it is larger than the sum of its proper divisors (784525).

8629643 is a wasteful number, since it uses less digits than its factorization.

8629643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784524.

The product of its digits is 62208, while the sum is 38.

The square root of 8629643 is about 2937.6254015786. The cubic root of 8629643 is about 205.1150890541.

The spelling of 8629643 in words is "eight million, six hundred twenty-nine thousand, six hundred forty-three".