11657657 has 4 divisors (see below), whose sum is σ = 12717456. Its totient is φ = 10597860.

The previous prime is 11657641. The next prime is 11657663. The reversal of 11657657 is 75675611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11657657 - 2⁴ = 11657641 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11657657.

It is not an unprimeable number, because it can be changed into a prime (11657617) 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 in 3 ways as a sum of consecutive naturals, for example, 529883 + ... + 529904.

It is an arithmetic number, because the mean of its divisors is an integer number (3179364).

Almost surely, 2^11657657 is an apocalyptic number.

It is an amenable number.

11657657 is a deficient number, since it is larger than the sum of its proper divisors (1059799).

11657657 is a wasteful number, since it uses less digits than its factorization.

11657657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059798.

The product of its digits is 44100, while the sum is 38.

The square root of 11657657 is about 3414.3311204393. The cubic root of 11657657 is about 226.7446720659.

The spelling of 11657657 in words is "eleven million, six hundred fifty-seven thousand, six hundred fifty-seven".