12364561 has 4 divisors (see below), whose sum is σ = 13488624. Its totient is φ = 11240500.

The previous prime is 12364543. The next prime is 12364591. The reversal of 12364561 is 16546321.

12364561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12364561 - 2⁷ = 12364433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12364591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 562015 + ... + 562036.

It is an arithmetic number, because the mean of its divisors is an integer number (3372156).

Almost surely, 2^12364561 is an apocalyptic number.

12364561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12364561 is a deficient number, since it is larger than the sum of its proper divisors (1124063).

12364561 is a wasteful number, since it uses less digits than its factorization.

12364561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124062.

The product of its digits is 4320, while the sum is 28.

The square root of 12364561 is about 3516.3277719803. The cubic root of 12364561 is about 231.2381931152.

The spelling of 12364561 in words is "twelve million, three hundred sixty-four thousand, five hundred sixty-one".