12609105 has 32 divisors (see below), whose sum is σ = 20946816. Its totient is φ = 6472704.

The previous prime is 12609101. The next prime is 12609137. The reversal of 12609105 is 50190621.

It is not a de Polignac number, because 12609105 - 2² = 12609101 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12609101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72799 + ... + 72971.

It is an arithmetic number, because the mean of its divisors is an integer number (654588).

Almost surely, 2^12609105 is an apocalyptic number.

12609105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12609105 is a deficient number, since it is larger than the sum of its proper divisors (8337711).

12609105 is a wasteful number, since it uses less digits than its factorization.

12609105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 12609105 is about 3550.9301598314. The cubic root of 12609105 is about 232.7527139999.

Adding to 12609105 its reverse (50190621), we get a palindrome (62799726).

The spelling of 12609105 in words is "twelve million, six hundred nine thousand, one hundred five".