8642002 has 8 divisors (see below), whose sum is σ = 13020300. Its totient is φ = 4301904.

The previous prime is 8641991. The next prime is 8642003. The reversal of 8642002 is 2002468.

It can be written as a sum of positive squares in 2 ways, for example, as 6046681 + 2595321 = 2459^2 + 1611^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (8642003) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 8977 + ... + 9892.

Almost surely, 2^8642002 is an apocalyptic number.

8642002 is a deficient number, since it is larger than the sum of its proper divisors (4378298).

8642002 is a wasteful number, since it uses less digits than its factorization.

8642002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19100.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 8642002 is about 2939.7282187304. The cubic root of 8642002 is about 205.2129613210.

The spelling of 8642002 in words is "eight million, six hundred forty-two thousand, two".