11662657 has 2 divisors, whose sum is σ = 11662658.
Its totient is φ = 11662656.
The previous prime is 11662639. The next prime is 11662661. The reversal of 11662657 is 75626611.
It is a happy number.
11662657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 11029041 + 633616 = 3321^2 + 796^2
It is an emirp because it is prime and its reverse (75626611) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 11662657 - 215 = 11629889 is a prime.
It is not a weakly prime, because it can be changed into another prime (11662687) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5831328 + 5831329.
It is an arithmetic number, because the mean of its divisors is an integer number (5831329).
Almost surely, 211662657 is an apocalyptic number.
It is an amenable number.
11662657 is a deficient number, since it is larger than the sum of its proper divisors (1).
11662657 is an equidigital number, since it uses as much as digits as its factorization.
11662657 is an evil number, because the sum of its binary digits is even.
The product of its digits is 15120, while the sum is 34.
The square root of 11662657 is about 3415.0632497803.
The cubic root of 11662657 is about 226.7770845628.
Note that the first 3 decimals are identical.
The spelling of 11662657 in words is "eleven million, six hundred sixty-two thousand, six hundred fifty-seven".