11641263 has 4 divisors (see below), whose sum is σ = 15521688. Its totient is φ = 7760840.

The previous prime is 11641249. The next prime is 11641313. The reversal of 11641263 is 36214611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36214611 = 3 ⋅12071537.

It is a cyclic number.

It is not a de Polignac number, because 11641263 - 2⁴ = 11641247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11641463) 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, 1940208 + ... + 1940213.

It is an arithmetic number, because the mean of its divisors is an integer number (3880422).

Almost surely, 2^11641263 is an apocalyptic number.

11641263 is a deficient number, since it is larger than the sum of its proper divisors (3880425).

11641263 is an equidigital number, since it uses as much as digits as its factorization.

11641263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3880424.

The product of its digits is 864, while the sum is 24.

The square root of 11641263 is about 3411.9295127537. The cubic root of 11641263 is about 226.6383329155.

Adding to 11641263 its reverse (36214611), we get a palindrome (47855874).

The spelling of 11641263 in words is "eleven million, six hundred forty-one thousand, two hundred sixty-three".