12566745 has 24 divisors (see below), whose sum is σ = 22591296. Its totient is φ = 6701616.

The previous prime is 12566737. The next prime is 12566747. The reversal of 12566745 is 54766521.

It is a happy number.

It is not a de Polignac number, because 12566745 - 2³ = 12566737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12566747) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3957 + ... + 6386.

It is an arithmetic number, because the mean of its divisors is an integer number (941304).

Almost surely, 2^12566745 is an apocalyptic number.

12566745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12566745 is a deficient number, since it is larger than the sum of its proper divisors (10024551).

12566745 is an equidigital number, since it uses as much as digits as its factorization.

12566745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10363 (or 10351 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 12566745 is about 3544.9605075374. The cubic root of 12566745 is about 232.4917791058.

It can be divided in two parts, 1256 and 6745, that added together give a triangular number (8001 = T₁₂₆).

The spelling of 12566745 in words is "twelve million, five hundred sixty-six thousand, seven hundred forty-five".