8642001 has 16 divisors (see below), whose sum is σ = 12268800. Its totient is φ = 5392128.

The previous prime is 8641991. The next prime is 8642003. The reversal of 8642001 is 1002468.

It is not a de Polignac number, because 8642001 - 2⁷ = 8641873 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 11835 + ... + 12543.

It is an arithmetic number, because the mean of its divisors is an integer number (766800).

Almost surely, 2^8642001 is an apocalyptic number.

It is an amenable number.

8642001 is a deficient number, since it is larger than the sum of its proper divisors (3626799).

8642001 is a wasteful number, since it uses less digits than its factorization.

8642001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 8642001 is about 2939.7280486467. The cubic root of 8642001 is about 205.2129534056.

Adding to 8642001 its reverse (1002468), we get a palindrome (9644469).

The spelling of 8642001 in words is "eight million, six hundred forty-two thousand, one".