13158705 has 24 divisors (see below), whose sum is σ = 24492672. Its totient is φ = 6015072.

The previous prime is 13158701. The next prime is 13158707. The reversal of 13158705 is 50785131.

13158705 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13158705 - 2² = 13158701 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13158701) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8217 + ... + 9686.

It is an arithmetic number, because the mean of its divisors is an integer number (1020528).

Almost surely, 2^13158705 is an apocalyptic number.

13158705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13158705 is a deficient number, since it is larger than the sum of its proper divisors (11333967).

13158705 is a wasteful number, since it uses less digits than its factorization.

13158705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17925 (or 17918 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 30.

The square root of 13158705 is about 3627.4929358994. The cubic root of 13158705 is about 236.0864437231.

The spelling of 13158705 in words is "thirteen million, one hundred fifty-eight thousand, seven hundred five".