13685961 has 8 divisors (see below), whose sum is σ = 18273280. Its totient is φ = 9111312.

The previous prime is 13685957. The next prime is 13685981. The reversal of 13685961 is 16958631.

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

It is not a de Polignac number, because 13685961 - 2² = 13685957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13685981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265 + ... + 5238.

It is an arithmetic number, because the mean of its divisors is an integer number (2284160).

Almost surely, 2^13685961 is an apocalyptic number.

It is an amenable number.

13685961 is a deficient number, since it is larger than the sum of its proper divisors (4587319).

13685961 is an equidigital number, since it uses as much as digits as its factorization.

13685961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6335.

The product of its digits is 38880, while the sum is 39.

The square root of 13685961 is about 3699.4541489252. The cubic root of 13685961 is about 239.1984894276.

The spelling of 13685961 in words is "thirteen million, six hundred eighty-five thousand, nine hundred sixty-one".