3500689 has 2 divisors, whose sum is σ = 3500690. Its totient is φ = 3500688.

The previous prime is 3500687. The next prime is 3500699. The reversal of 3500689 is 9860053.

3500689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2433600 + 1067089 = 1560^2 + 1033^2 .

It is a cyclic number.

It is not a de Polignac number, because 3500689 - 2¹ = 3500687 is a prime.

Together with 3500687, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 3500689.

It is not a weakly prime, because it can be changed into another prime (3500687) 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 as a sum of consecutive naturals, namely, 1750344 + 1750345.

It is an arithmetic number, because the mean of its divisors is an integer number (1750345).

Almost surely, 2^3500689 is an apocalyptic number.

It is an amenable number.

3500689 is a deficient number, since it is larger than the sum of its proper divisors (1).

3500689 is an equidigital number, since it uses as much as digits as its factorization.

3500689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 3500689 is about 1871.0128273211. The cubic root of 3500689 is about 151.8394108439.

The spelling of 3500689 in words is "three million, five hundred thousand, six hundred eighty-nine".