11689057 has 4 divisors (see below), whose sum is σ = 11722900. Its totient is φ = 11655216.

The previous prime is 11689049. The next prime is 11689063. The reversal of 11689057 is 75098611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10784656 + 904401 = 3284^2 + 951^2 .

It is a cyclic number.

It is not a de Polignac number, because 11689057 - 2³ = 11689049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11689087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16398 + ... + 17095.

It is an arithmetic number, because the mean of its divisors is an integer number (2930725).

Almost surely, 2^11689057 is an apocalyptic number.

It is an amenable number.

11689057 is a deficient number, since it is larger than the sum of its proper divisors (33843).

11689057 is an equidigital number, since it uses as much as digits as its factorization.

11689057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33842.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 11689057 is about 3418.9262934436. The cubic root of 11689057 is about 226.9480691365.

The spelling of 11689057 in words is "eleven million, six hundred eighty-nine thousand, fifty-seven".