13349647 has 4 divisors (see below), whose sum is σ = 14052280. Its totient is φ = 12647016.

The previous prime is 13349639. The next prime is 13349653. The reversal of 13349647 is 74694331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74694331 = 53 ⋅1409327.

It is a cyclic number.

It is not a de Polignac number, because 13349647 - 2³ = 13349639 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 (13349627) 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, 351288 + ... + 351325.

It is an arithmetic number, because the mean of its divisors is an integer number (3513070).

Almost surely, 2^13349647 is an apocalyptic number.

13349647 is a deficient number, since it is larger than the sum of its proper divisors (702633).

13349647 is an equidigital number, since it uses as much as digits as its factorization.

13349647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702632.

The product of its digits is 54432, while the sum is 37.

The square root of 13349647 is about 3653.7168746360. The cubic root of 13349647 is about 237.2228908367. Note that the first 3 decimals are identical.

The spelling of 13349647 in words is "thirteen million, three hundred forty-nine thousand, six hundred forty-seven".