11646539 has 2 divisors, whose sum is σ = 11646540. Its totient is φ = 11646538.

The previous prime is 11646521. The next prime is 11646559. The reversal of 11646539 is 93564611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11646539 - 2¹² = 11642443 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 11646499 and 11646508.

It is not a weakly prime, because it can be changed into another prime (11646559) 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, 5823269 + 5823270.

It is an arithmetic number, because the mean of its divisors is an integer number (5823270).

Almost surely, 2^11646539 is an apocalyptic number.

11646539 is a deficient number, since it is larger than the sum of its proper divisors (1).

11646539 is an equidigital number, since it uses as much as digits as its factorization.

11646539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 35.

The square root of 11646539 is about 3412.7025947187. The cubic root of 11646539 is about 226.6725664074.

The spelling of 11646539 in words is "eleven million, six hundred forty-six thousand, five hundred thirty-nine".