11771657 has 2 divisors, whose sum is σ = 11771658. Its totient is φ = 11771656.

The previous prime is 11771623. The next prime is 11771677. The reversal of 11771657 is 75617711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8042896 + 3728761 = 2836^2 + 1931^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11771657 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11771677) 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, 5885828 + 5885829.

It is an arithmetic number, because the mean of its divisors is an integer number (5885829).

Almost surely, 2^11771657 is an apocalyptic number.

It is an amenable number.

11771657 is a deficient number, since it is larger than the sum of its proper divisors (1).

11771657 is an equidigital number, since it uses as much as digits as its factorization.

11771657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10290, while the sum is 35.

The square root of 11771657 is about 3430.9848440353. The cubic root of 11771657 is about 227.4813863932.

The spelling of 11771657 in words is "eleven million, seven hundred seventy-one thousand, six hundred fifty-seven".