12646459 has 12 divisors (see below), whose sum is σ = 14955888. Its totient is φ = 10659600.

The previous prime is 12646427. The next prime is 12646463. The reversal of 12646459 is 95464621.

12646459 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12646459 - 2⁵ = 12646427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12646499) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 874 + ... + 5104.

It is an arithmetic number, because the mean of its divisors is an integer number (1246324).

Almost surely, 2^12646459 is an apocalyptic number.

12646459 is a deficient number, since it is larger than the sum of its proper divisors (2309429).

12646459 is an equidigital number, since it uses as much as digits as its factorization.

12646459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4306 (or 4299 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The square root of 12646459 is about 3556.1860187566. The cubic root of 12646459 is about 232.9823277994.

The spelling of 12646459 in words is "twelve million, six hundred forty-six thousand, four hundred fifty-nine".