13135605 has 16 divisors (see below), whose sum is σ = 24019584. Its totient is φ = 6004800.

The previous prime is 13135601. The next prime is 13135613. The reversal of 13135605 is 50653131.

It is not a de Polignac number, because 13135605 - 2² = 13135601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13135601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62446 + ... + 62655.

It is an arithmetic number, because the mean of its divisors is an integer number (1501224).

Almost surely, 2^13135605 is an apocalyptic number.

13135605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13135605 is a deficient number, since it is larger than the sum of its proper divisors (10883979).

13135605 is a wasteful number, since it uses less digits than its factorization.

13135605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125116.

The product of its (nonzero) digits is 1350, while the sum is 24.

The square root of 13135605 is about 3624.3075200650. The cubic root of 13135605 is about 235.9482135246.

Adding to 13135605 its reverse (50653131), we get a palindrome (63788736).

The spelling of 13135605 in words is "thirteen million, one hundred thirty-five thousand, six hundred five".