8652421 has 4 divisors (see below), whose sum is σ = 8662144. Its totient is φ = 8642700.

The previous prime is 8652407. The next prime is 8652431. The reversal of 8652421 is 1242568.

8652421 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 8652421 - 2⁵ = 8652389 is a prime.

It is a super-2 number, since 2×8652421² = 149728778322482, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8652421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8652401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3375 + ... + 5356.

It is an arithmetic number, because the mean of its divisors is an integer number (2165536).

Almost surely, 2^8652421 is an apocalyptic number.

It is an amenable number.

8652421 is a deficient number, since it is larger than the sum of its proper divisors (9723).

8652421 is an equidigital number, since it uses as much as digits as its factorization.

8652421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9722.

The product of its digits is 3840, while the sum is 28.

The square root of 8652421 is about 2941.4997875234. The cubic root of 8652421 is about 205.2953980513.

Adding to 8652421 its reverse (1242568), we get a palindrome (9894989).

The spelling of 8652421 in words is "eight million, six hundred fifty-two thousand, four hundred twenty-one".