10644385 has 8 divisors (see below), whose sum is σ = 12791016. Its totient is φ = 8503680.

The previous prime is 10644383. The next prime is 10644401. The reversal of 10644385 is 58344601.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3196944 + 7447441 = 1788^2 + 2729^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10644385 - 2¹ = 10644383 is a prime.

It is a super-2 number, since 2×10644385² = 226605864056450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10644383) 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 7 ways as a sum of consecutive naturals, for example, 5325 + ... + 7045.

It is an arithmetic number, because the mean of its divisors is an integer number (1598877).

Almost surely, 2^10644385 is an apocalyptic number.

It is an amenable number.

10644385 is a deficient number, since it is larger than the sum of its proper divisors (2146631).

10644385 is a wasteful number, since it uses less digits than its factorization.

10644385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2963.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 10644385 is about 3262.5733708225. The cubic root of 10644385 is about 219.9751004878.

Adding to 10644385 its reverse (58344601), we get a palindrome (68988986).

The spelling of 10644385 in words is "ten million, six hundred forty-four thousand, three hundred eighty-five".