3504689 has 2 divisors, whose sum is σ = 3504690. Its totient is φ = 3504688.

The previous prime is 3504673. The next prime is 3504691. The reversal of 3504689 is 9864053.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2534464 + 970225 = 1592^2 + 985^2 .

It is a cyclic number.

It is not a de Polignac number, because 3504689 - 2⁴ = 3504673 is a prime.

Together with 3504691, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3504619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1752344 + 1752345.

It is an arithmetic number, because the mean of its divisors is an integer number (1752345).

Almost surely, 2^3504689 is an apocalyptic number.

It is an amenable number.

3504689 is a deficient number, since it is larger than the sum of its proper divisors (1).

3504689 is an equidigital number, since it uses as much as digits as its factorization.

3504689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 3504689 is about 1872.0814619028. The cubic root of 3504689 is about 151.8972210313.

The spelling of 3504689 in words is "three million, five hundred four thousand, six hundred eighty-nine".