11945657 has 2 divisors, whose sum is σ = 11945658. Its totient is φ = 11945656.

The previous prime is 11945653. The next prime is 11945683. The reversal of 11945657 is 75654911.

11945657 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7706176 + 4239481 = 2776^2 + 2059^2 .

It is a cyclic number.

It is not a de Polignac number, because 11945657 - 2² = 11945653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11945657.

It is not a weakly prime, because it can be changed into another prime (11945653) 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, 5972828 + 5972829.

It is an arithmetic number, because the mean of its divisors is an integer number (5972829).

Almost surely, 2^11945657 is an apocalyptic number.

It is an amenable number.

11945657 is a deficient number, since it is larger than the sum of its proper divisors (1).

11945657 is an equidigital number, since it uses as much as digits as its factorization.

11945657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 38.

The square root of 11945657 is about 3456.2489783000. The cubic root of 11945657 is about 228.5967299187.

The spelling of 11945657 in words is "eleven million, nine hundred forty-five thousand, six hundred fifty-seven".