11700145 has 4 divisors (see below), whose sum is σ = 14040180. Its totient is φ = 9360112.

The previous prime is 11700127. The next prime is 11700149. The reversal of 11700145 is 54100711.

11700145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54100711 = 7 ⋅7728673.

It can be written as a sum of positive squares in 2 ways, for example, as 5702544 + 5997601 = 2388^2 + 2449^2 .

It is a cyclic number.

It is not a de Polignac number, because 11700145 - 2¹⁷ = 11569073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11700149) 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, 1170010 + ... + 1170019.

It is an arithmetic number, because the mean of its divisors is an integer number (3510045).

Almost surely, 2^11700145 is an apocalyptic number.

It is an amenable number.

11700145 is a deficient number, since it is larger than the sum of its proper divisors (2340035).

11700145 is an equidigital number, since it uses as much as digits as its factorization.

11700145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2340034.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 11700145 is about 3420.5474708005. The cubic root of 11700145 is about 227.0198058883.

Adding to 11700145 its reverse (54100711), we get a palindrome (65800856).

The spelling of 11700145 in words is "eleven million, seven hundred thousand, one hundred forty-five".