11686951 has 2 divisors, whose sum is σ = 11686952. Its totient is φ = 11686950.

The previous prime is 11686949. The next prime is 11686979. The reversal of 11686951 is 15968611.

It is a weak prime.

It is an emirp because it is prime and its reverse (15968611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11686951 - 2¹ = 11686949 is a prime.

Together with 11686949, it forms a pair of twin primes.

It is equal to p₇₆₈₈₃₅ and since 11686951 and 768835 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11686951.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11686901) 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, 5843475 + 5843476.

It is an arithmetic number, because the mean of its divisors is an integer number (5843476).

Almost surely, 2^11686951 is an apocalyptic number.

11686951 is a deficient number, since it is larger than the sum of its proper divisors (1).

11686951 is an equidigital number, since it uses as much as digits as its factorization.

11686951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 37.

The square root of 11686951 is about 3418.6182881392. The cubic root of 11686951 is about 226.9344386860.

The spelling of 11686951 in words is "eleven million, six hundred eighty-six thousand, nine hundred fifty-one".