13505606 has 4 divisors (see below), whose sum is σ = 20258412. Its totient is φ = 6752802.

The previous prime is 13505593. The next prime is 13505641. The reversal of 13505606 is 60650531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60650531 = 61 ⋅994271.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3376400 + ... + 3376403.

It is an arithmetic number, because the mean of its divisors is an integer number (5064603).

Almost surely, 2^13505606 is an apocalyptic number.

13505606 is a deficient number, since it is larger than the sum of its proper divisors (6752806).

13505606 is an equidigital number, since it uses as much as digits as its factorization.

13505606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6752805.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 13505606 is about 3674.9974149651. The cubic root of 13505606 is about 238.1431123833.

The spelling of 13505606 in words is "thirteen million, five hundred five thousand, six hundred six".