11587657 has 2 divisors, whose sum is σ = 11587658. Its totient is φ = 11587656.

The previous prime is 11587651. The next prime is 11587661. The reversal of 11587657 is 75678511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11587216 + 441 = 3404^2 + 21^2 .

It is an emirp because it is prime and its reverse (75678511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11587657 - 2³ = 11587649 is a prime.

It is not a weakly prime, because it can be changed into another prime (11587651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5793828 + 5793829.

It is an arithmetic number, because the mean of its divisors is an integer number (5793829).

Almost surely, 2^11587657 is an apocalyptic number.

It is an amenable number.

11587657 is a deficient number, since it is larger than the sum of its proper divisors (1).

11587657 is an equidigital number, since it uses as much as digits as its factorization.

11587657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58800, while the sum is 40.

The square root of 11587657 is about 3404.0647761169. The cubic root of 11587657 is about 226.2899208171.

The spelling of 11587657 in words is "eleven million, five hundred eighty-seven thousand, six hundred fifty-seven".