12545644 has 12 divisors (see below), whose sum is σ = 22071168. Its totient is φ = 6239600.

The previous prime is 12545641. The next prime is 12545647. The reversal of 12545644 is 44654521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12545641) and next prime (12545647).

It is not an unprimeable number, because it can be changed into a prime (12545641) 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, 7447 + ... + 8974.

It is an arithmetic number, because the mean of its divisors is an integer number (1839264).

Almost surely, 2^12545644 is an apocalyptic number.

It is an amenable number.

12545644 is a deficient number, since it is larger than the sum of its proper divisors (9525524).

12545644 is a wasteful number, since it uses less digits than its factorization.

12545644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16616 (or 16614 counting only the distinct ones).

The product of its digits is 19200, while the sum is 31.

The square root of 12545644 is about 3541.9830603773. The cubic root of 12545644 is about 232.3615794558.

The spelling of 12545644 in words is "twelve million, five hundred forty-five thousand, six hundred forty-four".