8642401 has 4 divisors (see below), whose sum is σ = 8657712. Its totient is φ = 8627092.

The previous prime is 8642383. The next prime is 8642429. The reversal of 8642401 is 1042468.

8642401 is digitally balanced in base 3, 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8642401 - 2²¹ = 6545249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8646401) 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, 6775 + ... + 7948.

It is an arithmetic number, because the mean of its divisors is an integer number (2164428).

Almost surely, 2^8642401 is an apocalyptic number.

It is an amenable number.

8642401 is a deficient number, since it is larger than the sum of its proper divisors (15311).

8642401 is a wasteful number, since it uses less digits than its factorization.

8642401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15310.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 8642401 is about 2939.7960813635. The cubic root of 8642401 is about 205.2161194901.

Adding to 8642401 its reverse (1042468), we get a palindrome (9684869).

The spelling of 8642401 in words is "eight million, six hundred forty-two thousand, four hundred one".