13071605 has 8 divisors (see below), whose sum is σ = 16227000. Its totient is φ = 10096576.

The previous prime is 13071559. The next prime is 13071631. The reversal of 13071605 is 50617031.

It can be written as a sum of positive squares in 4 ways, for example, as 10609 + 13060996 = 103^2 + 3614^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 13071605 - 2¹⁶ = 13006069 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44930 + ... + 45219.

It is an arithmetic number, because the mean of its divisors is an integer number (2028375).

Almost surely, 2^13071605 is an apocalyptic number.

It is an amenable number.

13071605 is a deficient number, since it is larger than the sum of its proper divisors (3155395).

13071605 is an equidigital number, since it uses as much as digits as its factorization.

13071605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90183.

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 13071605 is about 3615.4674663175. The cubic root of 13071605 is about 235.5643896338.

Adding to 13071605 its reverse (50617031), we get a palindrome (63688636).

The spelling of 13071605 in words is "thirteen million, seventy-one thousand, six hundred five".