13608785 has 8 divisors (see below), whose sum is σ = 16772136. Its totient is φ = 10592640.

The previous prime is 13608779. The next prime is 13608787. The reversal of 13608785 is 58780631.

It can be written as a sum of positive squares in 4 ways, for example, as 1274641 + 12334144 = 1129^2 + 3512^2 .

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

It is not a de Polignac number, because 13608785 - 2²⁰ = 12560209 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is a zygodrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (13608787) 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, 36596 + ... + 36965.

It is an arithmetic number, because the mean of its divisors is an integer number (2096517).

Almost surely, 2^13608785 is an apocalyptic number.

It is an amenable number.

13608785 is a deficient number, since it is larger than the sum of its proper divisors (3163351).

13608785 is an equidigital number, since it uses as much as digits as its factorization.

13608785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73603.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 13608785 is about 3689.0086744273. The cubic root of 13608785 is about 238.7480231555.

The spelling of 13608785 in words is "thirteen million, six hundred eight thousand, seven hundred eighty-five".