13307505 has 32 divisors (see below), whose sum is σ = 22861440. Its totient is φ = 6589440.

The previous prime is 13307461. The next prime is 13307507. The reversal of 13307505 is 50570331.

13307505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13307505 - 2⁸ = 13307249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13307507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14665 + ... + 15545.

It is an arithmetic number, because the mean of its divisors is an integer number (714420).

Almost surely, 2^13307505 is an apocalyptic number.

13307505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13307505 is a deficient number, since it is larger than the sum of its proper divisors (9553935).

13307505 is a wasteful number, since it uses less digits than its factorization.

13307505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961.

The product of its (nonzero) digits is 1575, while the sum is 24.

The square root of 13307505 is about 3647.9453120901. The cubic root of 13307505 is about 236.9730069491.

Adding to 13307505 its reverse (50570331), we get a palindrome (63877836).

The spelling of 13307505 in words is "thirteen million, three hundred seven thousand, five hundred five".