11765987 has 2 divisors, whose sum is σ = 11765988. Its totient is φ = 11765986.

The previous prime is 11765981. The next prime is 11766031. The reversal of 11765987 is 78956711.

11765987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (11766031) can be obtained adding 11765987 to its sum of digits (44).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11765987 - 2¹⁴ = 11749603 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11765981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5882993 + 5882994.

It is an arithmetic number, because the mean of its divisors is an integer number (5882994).

Almost surely, 2^11765987 is an apocalyptic number.

11765987 is a deficient number, since it is larger than the sum of its proper divisors (1).

11765987 is an equidigital number, since it uses as much as digits as its factorization.

11765987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 44.

The square root of 11765987 is about 3430.1584511506. The cubic root of 11765987 is about 227.4448572225. Note that the first 3 decimals are identical.

The spelling of 11765987 in words is "eleven million, seven hundred sixty-five thousand, nine hundred eighty-seven".