11645287 has 2 divisors, whose sum is σ = 11645288. Its totient is φ = 11645286.

The previous prime is 11645219. The next prime is 11645297. The reversal of 11645287 is 78254611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11645287 - 2¹⁵ = 11612519 is a prime.

It is a super-2 number, since 2×11645287² = 271225418624738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11645297) 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 as a sum of consecutive naturals, namely, 5822643 + 5822644.

It is an arithmetic number, because the mean of its divisors is an integer number (5822644).

Almost surely, 2^11645287 is an apocalyptic number.

11645287 is a deficient number, since it is larger than the sum of its proper divisors (1).

11645287 is an equidigital number, since it uses as much as digits as its factorization.

11645287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 34.

The square root of 11645287 is about 3412.5191574554. The cubic root of 11645287 is about 226.6644437018.

Adding to 11645287 its reverse (78254611), we get a palindrome (89899898).

The spelling of 11645287 in words is "eleven million, six hundred forty-five thousand, two hundred eighty-seven".