13505634 has 12 divisors (see below), whose sum is σ = 29262246. Its totient is φ = 4501872.

The previous prime is 13505593. The next prime is 13505641. The reversal of 13505634 is 43650531.

It can be written as a sum of positive squares in only one way, i.e., 13505625 + 9 = 3675^2 + 3^2 .

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 13505598 and 13505607.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 375139 + ... + 375174.

Almost surely, 2^13505634 is an apocalyptic number.

13505634 is an abundant number, since it is smaller than the sum of its proper divisors (15756612).

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

13505634 is a wasteful number, since it uses less digits than its factorization.

13505634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750321 (or 750318 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 13505634 is about 3675.0012244896. The cubic root of 13505634 is about 238.1432769570.

The spelling of 13505634 in words is "thirteen million, five hundred five thousand, six hundred thirty-four".