10644489 has 24 divisors (see below), whose sum is σ = 15823080. Its totient is φ = 6893568.

The previous prime is 10644451. The next prime is 10644509. The reversal of 10644489 is 98444601.

It is a happy number.

10644489 is a `hidden beast` number, since 1 + 0 + 644 + 4 + 8 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 627264 + 10017225 = 792^2 + 3165^2 .

It is not a de Polignac number, because 10644489 - 2⁸ = 10644233 is a prime.

It is a super-2 number, since 2×10644489² = 226610292142242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10644409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77629 + ... + 77765.

It is an arithmetic number, because the mean of its divisors is an integer number (659295).

Almost surely, 2^10644489 is an apocalyptic number.

It is an amenable number.

10644489 is a deficient number, since it is larger than the sum of its proper divisors (5178591).

10644489 is a wasteful number, since it uses less digits than its factorization.

10644489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329 (or 326 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 10644489 is about 3262.5893091224. The cubic root of 10644489 is about 219.9758169010.

The spelling of 10644489 in words is "ten million, six hundred forty-four thousand, four hundred eighty-nine".