13660145 has 8 divisors (see below), whose sum is σ = 17255040. Its totient is φ = 10352880.

The previous prime is 13660123. The next prime is 13660147. The reversal of 13660145 is 54106631.

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

It is not a de Polignac number, because 13660145 - 2⁶ = 13660081 is a prime.

It is a super-2 number, since 2×13660145² = 373199122842050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13660147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71801 + ... + 71990.

It is an arithmetic number, because the mean of its divisors is an integer number (2156880).

Almost surely, 2^13660145 is an apocalyptic number.

It is an amenable number.

13660145 is a deficient number, since it is larger than the sum of its proper divisors (3594895).

13660145 is a wasteful number, since it uses less digits than its factorization.

13660145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143815.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 13660145 is about 3695.9633385628. The cubic root of 13660145 is about 239.0479937230.

Adding to 13660145 its reverse (54106631), we get a palindrome (67766776).

The spelling of 13660145 in words is "thirteen million, six hundred sixty thousand, one hundred forty-five".