12249645 has 16 divisors (see below), whose sum is σ = 19803840. Its totient is φ = 6465024.

The previous prime is 12249641. The next prime is 12249647. The reversal of 12249645 is 54694221.

It is not a de Polignac number, because 12249645 - 2² = 12249641 is a prime.

It is a super-3 number, since 3×12249645³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12249641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2755 + ... + 5664.

It is an arithmetic number, because the mean of its divisors is an integer number (1237740).

Almost surely, 2^12249645 is an apocalyptic number.

12249645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12249645 is a deficient number, since it is larger than the sum of its proper divisors (7554195).

12249645 is an equidigital number, since it uses as much as digits as its factorization.

12249645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8524.

The product of its digits is 17280, while the sum is 33.

The square root of 12249645 is about 3499.9492853469. The cubic root of 12249645 is about 230.5195877720.

The spelling of 12249645 in words is "twelve million, two hundred forty-nine thousand, six hundred forty-five".