12609705 has 16 divisors (see below), whose sum is σ = 20260224. Its totient is φ = 6696960.

The previous prime is 12609697. The next prime is 12609713. The reversal of 12609705 is 50790621.

It is an interprime number because it is at equal distance from previous prime (12609697) and next prime (12609713).

It is not a de Polignac number, because 12609705 - 2³ = 12609697 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2220 + ... + 5490.

It is an arithmetic number, because the mean of its divisors is an integer number (1266264).

Almost surely, 2^12609705 is an apocalyptic number.

12609705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12609705 is a deficient number, since it is larger than the sum of its proper divisors (7650519).

12609705 is a wasteful number, since it uses less digits than its factorization.

12609705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3536.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 12609705 is about 3551.0146437321. The cubic root of 12609705 is about 232.7564057611.

The spelling of 12609705 in words is "twelve million, six hundred nine thousand, seven hundred five".