10644421 has 4 divisors (see below), whose sum is σ = 11011500. Its totient is φ = 10277344.

The previous prime is 10644409. The next prime is 10644437. The reversal of 10644421 is 12444601.

10644421 is digitally balanced in base 2, 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.

It can be written as a sum of positive squares in 2 ways, for example, as 8767521 + 1876900 = 2961^2 + 1370^2 .

It is a cyclic number.

It is not a de Polignac number, because 10644421 - 2²¹ = 8547269 is a prime.

It is a super-2 number, since 2×10644421² = 226607396850482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10644392 and 10644401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10644401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183496 + ... + 183553.

It is an arithmetic number, because the mean of its divisors is an integer number (2752875).

Almost surely, 2^10644421 is an apocalyptic number.

It is an amenable number.

10644421 is a deficient number, since it is larger than the sum of its proper divisors (367079).

10644421 is an equidigital number, since it uses as much as digits as its factorization.

10644421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367078.

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

The square root of 10644421 is about 3262.5788879351. The cubic root of 10644421 is about 219.9753484775.

The spelling of 10644421 in words is "ten million, six hundred forty-four thousand, four hundred twenty-one".