12499655 has 24 divisors (see below), whose sum is σ = 17611632. Its totient is φ = 8491392.

The previous prime is 12499651. The next prime is 12499657. The reversal of 12499655 is 55699421.

It is not a de Polignac number, because 12499655 - 2² = 12499651 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12499651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39779 + ... + 40091.

It is an arithmetic number, because the mean of its divisors is an integer number (733818).

Almost surely, 2^12499655 is an apocalyptic number.

12499655 is a deficient number, since it is larger than the sum of its proper divisors (5111977).

12499655 is a wasteful number, since it uses less digits than its factorization.

12499655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495 (or 488 counting only the distinct ones).

The product of its digits is 97200, while the sum is 41.

The square root of 12499655 is about 3535.4851152282. The cubic root of 12499655 is about 232.0773065301.

The spelling of 12499655 in words is "twelve million, four hundred ninety-nine thousand, six hundred fifty-five".