12945615 has 12 divisors (see below), whose sum is σ = 20735304. Its totient is φ = 6896896.

The previous prime is 12945613. The next prime is 12945617. The reversal of 12945615 is 51654921.

12945615 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12945613) and next prime (12945617).

It is not a de Polignac number, because 12945615 - 2¹ = 12945613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12945613) 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, 13471 + ... + 14399.

It is an arithmetic number, because the mean of its divisors is an integer number (1727942).

Almost surely, 2^12945615 is an apocalyptic number.

12945615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12945615 is a deficient number, since it is larger than the sum of its proper divisors (7789689).

12945615 is an frugal number, since it uses more digits than its factorization.

12945615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1866 (or 937 counting only the distinct ones).

The product of its digits is 10800, while the sum is 33.

The square root of 12945615 is about 3598.0015286267. The cubic root of 12945615 is about 234.8051198595.

The spelling of 12945615 in words is "twelve million, nine hundred forty-five thousand, six hundred fifteen".