10644915 has 16 divisors (see below), whose sum is σ = 17124768. Its totient is φ = 5646336.

The previous prime is 10644913. The next prime is 10644923. The reversal of 10644915 is 51944601.

It is a happy number.

It is not a de Polignac number, because 10644915 - 2¹ = 10644913 is a prime.

It is a super-2 number, since 2×10644915² = 226628430714450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10644911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1057 + ... + 4733.

It is an arithmetic number, because the mean of its divisors is an integer number (1070298).

Almost surely, 2^10644915 is an apocalyptic number.

10644915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

10644915 is a deficient number, since it is larger than the sum of its proper divisors (6479853).

10644915 is a wasteful number, since it uses less digits than its factorization.

10644915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3878.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 10644915 is about 3262.6545940384. The cubic root of 10644915 is about 219.9787513913.

The spelling of 10644915 in words is "ten million, six hundred forty-four thousand, nine hundred fifteen".