12645615 has 16 divisors (see below), whose sum is σ = 20279808. Its totient is φ = 6728736.

The previous prime is 12645547. The next prime is 12645623. The reversal of 12645615 is 51654621.

It is not a de Polignac number, because 12645615 - 2⁷ = 12645487 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9054 + ... + 10356.

It is an arithmetic number, because the mean of its divisors is an integer number (1267488).

Almost surely, 2^12645615 is an apocalyptic number.

12645615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12645615 is a deficient number, since it is larger than the sum of its proper divisors (7634193).

12645615 is a wasteful number, since it uses less digits than its factorization.

12645615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1958.

The product of its digits is 7200, while the sum is 30.

The square root of 12645615 is about 3556.0673503183. The cubic root of 12645615 is about 232.9771447554.

The spelling of 12645615 in words is "twelve million, six hundred forty-five thousand, six hundred fifteen".