11640373 has 4 divisors (see below), whose sum is σ = 11648140. Its totient is φ = 11632608.

The previous prime is 11640347. The next prime is 11640403. The reversal of 11640373 is 37304611.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 37304611 = 61 ⋅611551.

It can be written as a sum of positive squares in 2 ways, for example, as 5846724 + 5793649 = 2418^2 + 2407^2 .

It is a cyclic number.

It is not a de Polignac number, because 11640373 - 2¹⁷ = 11509301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11640313) 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 3 ways as a sum of consecutive naturals, for example, 840 + ... + 4897.

It is an arithmetic number, because the mean of its divisors is an integer number (2912035).

Almost surely, 2^11640373 is an apocalyptic number.

It is an amenable number.

11640373 is a deficient number, since it is larger than the sum of its proper divisors (7767).

11640373 is an equidigital number, since it uses as much as digits as its factorization.

11640373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7766.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 11640373 is about 3411.7990855266. The cubic root of 11640373 is about 226.6325571030.

Adding to 11640373 its reverse (37304611), we get a palindrome (48944984).

The spelling of 11640373 in words is "eleven million, six hundred forty thousand, three hundred seventy-three".