12549623 has 12 divisors (see below), whose sum is σ = 13169520. Its totient is φ = 11956032.

The previous prime is 12549619. The next prime is 12549631. The reversal of 12549623 is 32694521.

It is a happy number.

It is not a de Polignac number, because 12549623 - 2² = 12549619 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12549623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12549643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 121790 + ... + 121892.

It is an arithmetic number, because the mean of its divisors is an integer number (1097460).

Almost surely, 2^12549623 is an apocalyptic number.

12549623 is a deficient number, since it is larger than the sum of its proper divisors (619897).

12549623 is an equidigital number, since it uses as much as digits as its factorization.

12549623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266 (or 229 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

The square root of 12549623 is about 3542.5447068456. The cubic root of 12549623 is about 232.3861422708.

The spelling of 12549623 in words is "twelve million, five hundred forty-nine thousand, six hundred twenty-three".