11639145 has 16 divisors (see below), whose sum is σ = 21283200. Its totient is φ = 5320704.

The previous prime is 11639141. The next prime is 11639161. The reversal of 11639145 is 54193611.

11639145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11639145 - 2² = 11639141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11639141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55320 + ... + 55529.

It is an arithmetic number, because the mean of its divisors is an integer number (1330200).

Almost surely, 2^11639145 is an apocalyptic number.

11639145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11639145 is a deficient number, since it is larger than the sum of its proper divisors (9644055).

11639145 is a wasteful number, since it uses less digits than its factorization.

11639145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110864.

The product of its digits is 3240, while the sum is 30.

The square root of 11639145 is about 3411.6191170762. The cubic root of 11639145 is about 226.6245872963.

The spelling of 11639145 in words is "eleven million, six hundred thirty-nine thousand, one hundred forty-five".