13347745 has 4 divisors (see below), whose sum is σ = 16017300. Its totient is φ = 10678192.

The previous prime is 13347739. The next prime is 13347767. The reversal of 13347745 is 54774331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3254416 + 10093329 = 1804^2 + 3177^2 .

It is a cyclic number.

It is not a de Polignac number, because 13347745 - 2⁷ = 13347617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13347745.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1334770 + ... + 1334779.

It is an arithmetic number, because the mean of its divisors is an integer number (4004325).

Almost surely, 2^13347745 is an apocalyptic number.

It is an amenable number.

13347745 is a deficient number, since it is larger than the sum of its proper divisors (2669555).

13347745 is an equidigital number, since it uses as much as digits as its factorization.

13347745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2669554.

The product of its digits is 35280, while the sum is 34.

The square root of 13347745 is about 3653.4565824709. The cubic root of 13347745 is about 237.2116241376.

The spelling of 13347745 in words is "thirteen million, three hundred forty-seven thousand, seven hundred forty-five".