1103689 has 4 divisors (see below), whose sum is σ = 1116180. Its totient is φ = 1091200.

The previous prime is 1103639. The next prime is 1103699. The reversal of 1103689 is 9863011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9863011 = 601 ⋅16411.

It can be written as a sum of positive squares in 2 ways, for example, as 308025 + 795664 = 555^2 + 892^2 .

It is a cyclic number.

It is not a de Polignac number, because 1103689 - 2⁷ = 1103561 is a prime.

It is a super-3 number, since 3×1103689³ = 4033308086945615307, which contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1103629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6112 + ... + 6289.

It is an arithmetic number, because the mean of its divisors is an integer number (279045).

2^1103689 is an apocalyptic number.

It is an amenable number.

1103689 is a deficient number, since it is larger than the sum of its proper divisors (12491).

1103689 is an equidigital number, since it uses as much as digits as its factorization.

1103689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12490.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 1103689 is about 1050.5660379053. The cubic root of 1103689 is about 103.3432791907.

The spelling of 1103689 in words is "one million, one hundred three thousand, six hundred eighty-nine".