103685689 has 4 divisors (see below), whose sum is σ = 103734756. Its totient is φ = 103636624.

The previous prime is 103685677. The next prime is 103685693. The reversal of 103685689 is 986586301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 986586301 = 16931 ⋅58271.

It can be written as a sum of positive squares in 2 ways, for example, as 78765625 + 24920064 = 8875^2 + 4992^2 .

It is a cyclic number.

It is not a de Polignac number, because 103685689 - 2¹¹ = 103683641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103685629) 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, 21214 + ... + 25639.

It is an arithmetic number, because the mean of its divisors is an integer number (25933689).

Almost surely, 2^103685689 is an apocalyptic number.

It is an amenable number.

103685689 is a deficient number, since it is larger than the sum of its proper divisors (49067).

103685689 is an equidigital number, since it uses as much as digits as its factorization.

103685689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49066.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 103685689 is about 10182.6170015375. The cubic root of 103685689 is about 469.7927092530.

The spelling of 103685689 in words is "one hundred three million, six hundred eighty-five thousand, six hundred eighty-nine".