13249705 has 16 divisors (see below), whose sum is σ = 18393984. Its totient is φ = 8974080.

The previous prime is 13249699. The next prime is 13249721. The reversal of 13249705 is 50794231.

It is not a de Polignac number, because 13249705 - 2¹¹ = 13247657 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 625 + ... + 5185.

It is an arithmetic number, because the mean of its divisors is an integer number (1149624).

Almost surely, 2^13249705 is an apocalyptic number.

It is an amenable number.

13249705 is a deficient number, since it is larger than the sum of its proper divisors (5144279).

13249705 is an equidigital number, since it uses as much as digits as its factorization.

13249705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4656.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 13249705 is about 3640.0144230483. The cubic root of 13249705 is about 236.6294184144.

The spelling of 13249705 in words is "thirteen million, two hundred forty-nine thousand, seven hundred five".