12684345 has 8 divisors (see below), whose sum is σ = 20294976. Its totient is φ = 6764976.

The previous prime is 12684323. The next prime is 12684359. The reversal of 12684345 is 54348621.

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

It is not a de Polignac number, because 12684345 - 2¹⁷ = 12553273 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 422797 + ... + 422826.

It is an arithmetic number, because the mean of its divisors is an integer number (2536872).

Almost surely, 2^12684345 is an apocalyptic number.

12684345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12684345 is a deficient number, since it is larger than the sum of its proper divisors (7610631).

12684345 is an equidigital number, since it uses as much as digits as its factorization.

12684345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845631.

The product of its digits is 23040, while the sum is 33.

The square root of 12684345 is about 3561.5088094795. The cubic root of 12684345 is about 233.2147504025.

The spelling of 12684345 in words is "twelve million, six hundred eighty-four thousand, three hundred forty-five".