12609081 has 8 divisors (see below), whose sum is σ = 18680160. Its totient is φ = 8406036.

The previous prime is 12609073. The next prime is 12609097. The reversal of 12609081 is 18090621.

12609081 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12609081 - 2³ = 12609073 is a prime.

It is a super-2 number, since 2×12609081² = 317977847329122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 467003 = 12609081 / (1 + 2 + 6 + 0 + 9 + 0 + 8 + 1).

It is not an unprimeable number, because it can be changed into a prime (12609031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233475 + ... + 233528.

It is an arithmetic number, because the mean of its divisors is an integer number (2335020).

Almost surely, 2^12609081 is an apocalyptic number.

It is an amenable number.

12609081 is a deficient number, since it is larger than the sum of its proper divisors (6071079).

12609081 is an equidigital number, since it uses as much as digits as its factorization.

12609081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467012 (or 467006 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 12609081 is about 3550.9267804335. The cubic root of 12609081 is about 232.7525663270.

The spelling of 12609081 in words is "twelve million, six hundred nine thousand, eighty-one".