13720855 has 8 divisors (see below), whose sum is σ = 16866864. Its totient is φ = 10708800.

The previous prime is 13720843. The next prime is 13720859. The reversal of 13720855 is 55802731.

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

It is not a de Polignac number, because 13720855 - 2⁵ = 13720823 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 (13720859) 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 7 ways as a sum of consecutive naturals, for example, 33261 + ... + 33670.

It is an arithmetic number, because the mean of its divisors is an integer number (2108358).

Almost surely, 2^13720855 is an apocalyptic number.

13720855 is a deficient number, since it is larger than the sum of its proper divisors (3146009).

13720855 is an equidigital number, since it uses as much as digits as its factorization.

13720855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66977.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 13720855 is about 3704.1672478440. The cubic root of 13720855 is about 239.4016053207.

The spelling of 13720855 in words is "thirteen million, seven hundred twenty thousand, eight hundred fifty-five".