3508649 has 2 divisors, whose sum is σ = 3508650. Its totient is φ = 3508648.

The previous prime is 3508621. The next prime is 3508651. The reversal of 3508649 is 9468053.

3508649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3312400 + 196249 = 1820^2 + 443^2 .

It is a cyclic number.

It is not a de Polignac number, because 3508649 - 2¹⁶ = 3443113 is a prime.

Together with 3508651, 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 (3508619) 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, 1754324 + 1754325.

It is an arithmetic number, because the mean of its divisors is an integer number (1754325).

Almost surely, 2^3508649 is an apocalyptic number.

It is an amenable number.

3508649 is a deficient number, since it is larger than the sum of its proper divisors (1).

3508649 is an equidigital number, since it uses as much as digits as its factorization.

3508649 is an odious number, because the sum of its binary digits is odd.

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

The square root of 3508649 is about 1873.1388095921. The cubic root of 3508649 is about 151.9544098037.

The spelling of 3508649 in words is "three million, five hundred eight thousand, six hundred forty-nine".