11718761 has 2 divisors, whose sum is σ = 11718762. Its totient is φ = 11718760.

The previous prime is 11718739. The next prime is 11718787. The reversal of 11718761 is 16781711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8410000 + 3308761 = 2900^2 + 1819^2 .

It is an emirp because it is prime and its reverse (16781711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11718761 - 2²² = 7524457 is a prime.

It is equal to p₇₇₀₇₈₃ and since 11718761 and 770783 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (11718061) 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 as a sum of consecutive naturals, namely, 5859380 + 5859381.

It is an arithmetic number, because the mean of its divisors is an integer number (5859381).

Almost surely, 2^11718761 is an apocalyptic number.

It is an amenable number.

11718761 is a deficient number, since it is larger than the sum of its proper divisors (1).

11718761 is an equidigital number, since it uses as much as digits as its factorization.

11718761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2352, while the sum is 32.

The square root of 11718761 is about 3423.2675910597. The cubic root of 11718761 is about 227.1401451736.

The spelling of 11718761 in words is "eleven million, seven hundred eighteen thousand, seven hundred sixty-one".