13680145 has 8 divisors (see below), whose sum is σ = 16945920. Its totient is φ = 10590960.

The previous prime is 13680113. The next prime is 13680167. The reversal of 13680145 is 54108631.

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

It is not a de Polignac number, because 13680145 - 2⁵ = 13680113 is a prime.

It is an unprimeable number.

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, 43975 + ... + 44284.

It is an arithmetic number, because the mean of its divisors is an integer number (2118240).

Almost surely, 2^13680145 is an apocalyptic number.

It is an amenable number.

13680145 is a deficient number, since it is larger than the sum of its proper divisors (3265775).

13680145 is an equidigital number, since it uses as much as digits as its factorization.

13680145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88295.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 13680145 is about 3698.6680034845. The cubic root of 13680145 is about 239.1646012817.

Adding to 13680145 its reverse (54108631), we get a palindrome (67788776).

The spelling of 13680145 in words is "thirteen million, six hundred eighty thousand, one hundred forty-five".