12878609 has 8 divisors (see below), whose sum is σ = 13358592. Its totient is φ = 12402720.

The previous prime is 12878603. The next prime is 12878669. The reversal of 12878609 is 90687821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12878609 - 2¹² = 12874513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12878603) 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, 6332 + ... + 8114.

It is an arithmetic number, because the mean of its divisors is an integer number (1669824).

Almost surely, 2^12878609 is an apocalyptic number.

It is an amenable number.

12878609 is a deficient number, since it is larger than the sum of its proper divisors (479983).

12878609 is a wasteful number, since it uses less digits than its factorization.

12878609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2047.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 12878609 is about 3588.6778902543. The cubic root of 12878609 is about 234.3993048336.

The spelling of 12878609 in words is "twelve million, eight hundred seventy-eight thousand, six hundred nine".