11782987 has 2 divisors, whose sum is σ = 11782988. Its totient is φ = 11782986.

The previous prime is 11782973. The next prime is 11782993. The reversal of 11782987 is 78928711.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11782987 - 2²³ = 3394379 is a prime.

It is not a weakly prime, because it can be changed into another prime (11782937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5891493 + 5891494.

It is an arithmetic number, because the mean of its divisors is an integer number (5891494).

Almost surely, 2^11782987 is an apocalyptic number.

11782987 is a deficient number, since it is larger than the sum of its proper divisors (1).

11782987 is an equidigital number, since it uses as much as digits as its factorization.

11782987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 43.

The square root of 11782987 is about 3432.6355763465. The cubic root of 11782987 is about 227.5543451863.

It can be divided in two parts, 11782 and 987, that added together give a square (12769 = 113²).

The spelling of 11782987 in words is "eleven million, seven hundred eighty-two thousand, nine hundred eighty-seven".