11780687 has 2 divisors, whose sum is σ = 11780688. Its totient is φ = 11780686.

The previous prime is 11780617. The next prime is 11780701. The reversal of 11780687 is 78608711.

It is a strong prime.

It is an emirp because it is prime and its reverse (78608711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11780687 - 2¹² = 11776591 is a prime.

It is a super-3 number, since 3×11780687³ (a number of 22 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11780687.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11780617) 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, 5890343 + 5890344.

It is an arithmetic number, because the mean of its divisors is an integer number (5890344).

Almost surely, 2^11780687 is an apocalyptic number.

11780687 is a deficient number, since it is larger than the sum of its proper divisors (1).

11780687 is an equidigital number, since it uses as much as digits as its factorization.

11780687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 38.

The square root of 11780687 is about 3432.3005404539. The cubic root of 11780687 is about 227.5395382716.

The spelling of 11780687 in words is "eleven million, seven hundred eighty thousand, six hundred eighty-seven".