13066145 has 4 divisors (see below), whose sum is σ = 15679380. Its totient is φ = 10452912.

The previous prime is 13066099. The next prime is 13066147. The reversal of 13066145 is 54166031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5536609 + 7529536 = 2353^2 + 2744^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13066145 is a prime.

It is a super-2 number, since 2×13066145² = 341448290322050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13066147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1306610 + ... + 1306619.

It is an arithmetic number, because the mean of its divisors is an integer number (3919845).

Almost surely, 2^13066145 is an apocalyptic number.

It is an amenable number.

13066145 is a deficient number, since it is larger than the sum of its proper divisors (2613235).

13066145 is an equidigital number, since it uses as much as digits as its factorization.

13066145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2613234.

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

The square root of 13066145 is about 3614.7122983718. The cubic root of 13066145 is about 235.5315867075.

The spelling of 13066145 in words is "thirteen million, sixty-six thousand, one hundred forty-five".