12499647 has 8 divisors (see below), whose sum is σ = 16705920. Its totient is φ = 8313240.

The previous prime is 12499639. The next prime is 12499651. The reversal of 12499647 is 74699421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12499647 - 2³ = 12499639 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 12499599 and 12499608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12499657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3429 + ... + 6062.

It is an arithmetic number, because the mean of its divisors is an integer number (2088240).

Almost surely, 2^12499647 is an apocalyptic number.

12499647 is a deficient number, since it is larger than the sum of its proper divisors (4206273).

12499647 is an equidigital number, since it uses as much as digits as its factorization.

12499647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9933.

The product of its digits is 108864, while the sum is 42.

The square root of 12499647 is about 3535.4839838415. The cubic root of 12499647 is about 232.0772570189.

The spelling of 12499647 in words is "twelve million, four hundred ninety-nine thousand, six hundred forty-seven".