11640135 has 16 divisors (see below), whose sum is σ = 20057184. Its totient is φ = 5730432.

The previous prime is 11640131. The next prime is 11640151. The reversal of 11640135 is 53104611.

It is not a de Polignac number, because 11640135 - 2² = 11640131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11640131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29652 + ... + 30041.

It is an arithmetic number, because the mean of its divisors is an integer number (1253574).

Almost surely, 2^11640135 is an apocalyptic number.

11640135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11640135 is a deficient number, since it is larger than the sum of its proper divisors (8417049).

11640135 is a wasteful number, since it uses less digits than its factorization.

11640135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59714.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 11640135 is about 3411.7642063894. The cubic root of 11640135 is about 226.6310125100.

Adding to 11640135 its reverse (53104611), we get a palindrome (64744746).

It can be divided in two parts, 11 and 640135, that added together give a triangular number (640146 = T₁₁₃₁).

The spelling of 11640135 in words is "eleven million, six hundred forty thousand, one hundred thirty-five".