13505706 has 24 divisors (see below), whose sum is σ = 30272580. Its totient is φ = 4346496.

The previous prime is 13505671. The next prime is 13505717. The reversal of 13505706 is 60750531.

It can be written as a sum of positive squares in 2 ways, for example, as 13505625 + 81 = 3675^2 + 9^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13505706.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12415 + ... + 13458.

Almost surely, 2^13505706 is an apocalyptic number.

13505706 is an abundant number, since it is smaller than the sum of its proper divisors (16766874).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13505706 is a wasteful number, since it uses less digits than its factorization.

13505706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25910 (or 25907 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 27.

The square root of 13505706 is about 3675.0110203916. The cubic root of 13505706 is about 238.1437001455.

It can be divided in two parts, 1350 and 5706, that added together give a square (7056 = 84²).

The spelling of 13505706 in words is "thirteen million, five hundred five thousand, seven hundred six".