12453661 has 16 divisors (see below), whose sum is σ = 14284800. Its totient is φ = 10753200.

The previous prime is 12453659. The next prime is 12453671. The reversal of 12453661 is 16635421.

It is a cyclic number.

It is not a de Polignac number, because 12453661 - 2¹ = 12453659 is a prime.

Its product of digits (4320) is a multiple of the sum of its prime divisors (720).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12453611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19810 + ... + 20428.

It is an arithmetic number, because the mean of its divisors is an integer number (892800).

Almost surely, 2^12453661 is an apocalyptic number.

12453661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12453661 is a deficient number, since it is larger than the sum of its proper divisors (1831139).

12453661 is a wasteful number, since it uses less digits than its factorization.

12453661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720.

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

The square root of 12453661 is about 3528.9744969325. The cubic root of 12453661 is about 231.7923044571.

The spelling of 12453661 in words is "twelve million, four hundred fifty-three thousand, six hundred sixty-one".