8648642 has 4 divisors (see below), whose sum is σ = 12972966. Its totient is φ = 4324320.

The previous prime is 8648557. The next prime is 8648677. The reversal of 8648642 is 2468468.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 7458361 + 1190281 = 2731^2 + 1091^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8648596 and 8648605.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2162159 + ... + 2162162.

Almost surely, 2^8648642 is an apocalyptic number.

8648642 is a deficient number, since it is larger than the sum of its proper divisors (4324324).

8648642 is a wasteful number, since it uses less digits than its factorization.

8648642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4324323.

The product of its digits is 73728, while the sum is 38.

The square root of 8648642 is about 2940.8573579825. The cubic root of 8648642 is about 205.2655056746.

The spelling of 8648642 in words is "eight million, six hundred forty-eight thousand, six hundred forty-two".