1101689 has 2 divisors, whose sum is σ = 1101690. Its totient is φ = 1101688.

The previous prime is 1101673. The next prime is 1101691. The reversal of 1101689 is 9861011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 883600 + 218089 = 940^2 + 467^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101689 - 2⁴ = 1101673 is a prime.

Together with 1101691, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1101619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550844 + 550845.

It is an arithmetic number, because the mean of its divisors is an integer number (550845).

2^1101689 is an apocalyptic number.

It is an amenable number.

1101689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101689 is an equidigital number, since it uses as much as digits as its factorization.

1101689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 1101689 is about 1049.6137384772. The cubic root of 1101689 is about 103.2808185005.

The spelling of 1101689 in words is "one million, one hundred one thousand, six hundred eighty-nine".