11785649 has 2 divisors, whose sum is σ = 11785650. Its totient is φ = 11785648.

The previous prime is 11785633. The next prime is 11785651. The reversal of 11785649 is 94658711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11343424 + 442225 = 3368^2 + 665^2 .

It is a cyclic number.

It is not a de Polignac number, because 11785649 - 2⁴ = 11785633 is a prime.

Together with 11785651, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11785349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5892824 + 5892825.

It is an arithmetic number, because the mean of its divisors is an integer number (5892825).

Almost surely, 2^11785649 is an apocalyptic number.

It is an amenable number.

11785649 is a deficient number, since it is larger than the sum of its proper divisors (1).

11785649 is an equidigital number, since it uses as much as digits as its factorization.

11785649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 41.

The square root of 11785649 is about 3433.0233031542. The cubic root of 11785649 is about 227.5714801752.

The spelling of 11785649 in words is "eleven million, seven hundred eighty-five thousand, six hundred forty-nine".