13680189 has 12 divisors (see below), whose sum is σ = 20922876. Its totient is φ = 8583552.

The previous prime is 13680187. The next prime is 13680203. The reversal of 13680189 is 98108631.

It can be written as a sum of positive squares in 2 ways, for example, as 8468100 + 5212089 = 2910^2 + 2283^2 .

It is not a de Polignac number, because 13680189 - 2¹ = 13680187 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13680187) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44554 + ... + 44859.

It is an arithmetic number, because the mean of its divisors is an integer number (1743573).

Almost surely, 2^13680189 is an apocalyptic number.

It is an amenable number.

13680189 is a deficient number, since it is larger than the sum of its proper divisors (7242687).

13680189 is a wasteful number, since it uses less digits than its factorization.

13680189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89436 (or 89433 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 13680189 is about 3698.6739515670. The cubic root of 13680189 is about 239.1648576930.

The spelling of 13680189 in words is "thirteen million, six hundred eighty thousand, one hundred eighty-nine".