13507885 has 4 divisors (see below), whose sum is σ = 16209468. Its totient is φ = 10806304.

The previous prime is 13507883. The next prime is 13507889. The reversal of 13507885 is 58870531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3433609 + 10074276 = 1853^2 + 3174^2 .

It is a cyclic number.

It is not a de Polignac number, because 13507885 - 2¹ = 13507883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13507883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1350784 + ... + 1350793.

It is an arithmetic number, because the mean of its divisors is an integer number (4052367).

Almost surely, 2^13507885 is an apocalyptic number.

It is an amenable number.

13507885 is a deficient number, since it is larger than the sum of its proper divisors (2701583).

13507885 is an equidigital number, since it uses as much as digits as its factorization.

13507885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2701582.

The product of its (nonzero) digits is 33600, while the sum is 37.

The square root of 13507885 is about 3675.3074701309. The cubic root of 13507885 is about 238.1565067626.

The spelling of 13507885 in words is "thirteen million, five hundred seven thousand, eight hundred eighty-five".