10644009 has 24 divisors (see below), whose sum is σ = 15660960. Its totient is φ = 6412032.

The previous prime is 10644001. The next prime is 10644017. The reversal of 10644009 is 90044601.

It is an interprime number because it is at equal distance from previous prime (10644001) and next prime (10644017).

It is not a de Polignac number, because 10644009 - 2³ = 10644001 is a prime.

It is a super-3 number, since 3×10644009³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 10644009.

It is not an unprimeable number, because it can be changed into a prime (10644001) 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, 29977 + ... + 30329.

It is an arithmetic number, because the mean of its divisors is an integer number (652540).

Almost surely, 2^10644009 is an apocalyptic number.

10644009 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

10644009 is a deficient number, since it is larger than the sum of its proper divisors (5016951).

10644009 is a wasteful number, since it uses less digits than its factorization.

10644009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421 (or 398 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 10644009 is about 3262.5157470884. The cubic root of 10644009 is about 219.9725103393.

The spelling of 10644009 in words is "ten million, six hundred forty-four thousand, nine".