13391655 has 8 divisors (see below), whose sum is σ = 21426672. Its totient is φ = 7142208.

The previous prime is 13391641. The next prime is 13391683. The reversal of 13391655 is 55619331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13391655 - 2⁴ = 13391639 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 446374 + ... + 446403.

It is an arithmetic number, because the mean of its divisors is an integer number (2678334).

Almost surely, 2^13391655 is an apocalyptic number.

13391655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13391655 is a deficient number, since it is larger than the sum of its proper divisors (8035017).

13391655 is an equidigital number, since it uses as much as digits as its factorization.

13391655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892785.

The product of its digits is 12150, while the sum is 33.

The square root of 13391655 is about 3659.4610258889. The cubic root of 13391655 is about 237.4714573270.

The spelling of 13391655 in words is "thirteen million, three hundred ninety-one thousand, six hundred fifty-five".