12645670 has 16 divisors (see below), whose sum is σ = 22808160. Its totient is φ = 5048064.

The previous prime is 12645667. The next prime is 12645707. The reversal of 12645670 is 7654621.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5791 + ... + 7669.

It is an arithmetic number, because the mean of its divisors is an integer number (1425510).

Almost surely, 2^12645670 is an apocalyptic number.

12645670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12645670 is a deficient number, since it is larger than the sum of its proper divisors (10162490).

12645670 is a wasteful number, since it uses less digits than its factorization.

12645670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2559.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 12645670 is about 3556.0750835718. The cubic root of 12645670 is about 232.9774825200.

It can be divided in two parts, 126 and 45670, that added together give a square (45796 = 214²).

The spelling of 12645670 in words is "twelve million, six hundred forty-five thousand, six hundred seventy".