11640073 has 4 divisors (see below), whose sum is σ = 11681488. Its totient is φ = 11598660.

The previous prime is 11640061. The next prime is 11640077. The reversal of 11640073 is 37004611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37004611 = 7 ⋅5286373.

It is a cyclic number.

It is not a de Polignac number, because 11640073 - 2⁹ = 11639561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11640077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20283 + ... + 20848.

It is an arithmetic number, because the mean of its divisors is an integer number (2920372).

Almost surely, 2^11640073 is an apocalyptic number.

It is an amenable number.

11640073 is a deficient number, since it is larger than the sum of its proper divisors (41415).

11640073 is an equidigital number, since it uses as much as digits as its factorization.

11640073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41414.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 11640073 is about 3411.7551201691. The cubic root of 11640073 is about 226.6306101336.

Adding to 11640073 its reverse (37004611), we get a palindrome (48644684).

The spelling of 11640073 in words is "eleven million, six hundred forty thousand, seventy-three".