8610421 has 4 divisors (see below), whose sum is σ = 8642700. Its totient is φ = 8578144.

The previous prime is 8610409. The next prime is 8610431. The reversal of 8610421 is 1240168.

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

It can be written as a sum of positive squares in 2 ways, for example, as 171396 + 8439025 = 414^2 + 2905^2 .

It is a cyclic number.

It is not a de Polignac number, because 8610421 - 2⁵ = 8610389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8610392 and 8610401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8610431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15736 + ... + 16273.

It is an arithmetic number, because the mean of its divisors is an integer number (2160675).

Almost surely, 2^8610421 is an apocalyptic number.

It is an amenable number.

8610421 is a deficient number, since it is larger than the sum of its proper divisors (32279).

8610421 is a wasteful number, since it uses less digits than its factorization.

8610421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32278.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 8610421 is about 2934.3518875554. The cubic root of 8610421 is about 204.9626820828.

Adding to 8610421 its reverse (1240168), we get a palindrome (9850589).

The spelling of 8610421 in words is "eight million, six hundred ten thousand, four hundred twenty-one".