12689474 has 8 divisors (see below), whose sum is σ = 21753408. Its totient is φ = 5438340.

The previous prime is 12689423. The next prime is 12689477. The reversal of 12689474 is 47498621.

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

It is a super-2 number, since 2×12689474² = 322045500793352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12689477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 453182 + ... + 453209.

It is an arithmetic number, because the mean of its divisors is an integer number (2719176).

Almost surely, 2^12689474 is an apocalyptic number.

12689474 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12689474 is a deficient number, since it is larger than the sum of its proper divisors (9063934).

12689474 is an equidigital number, since it uses as much as digits as its factorization.

12689474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906400.

The product of its digits is 96768, while the sum is 41.

The square root of 12689474 is about 3562.2287966946. The cubic root of 12689474 is about 233.2461801496.

The spelling of 12689474 in words is "twelve million, six hundred eighty-nine thousand, four hundred seventy-four".