3505813 has 2 divisors, whose sum is σ = 3505814. Its totient is φ = 3505812.

The previous prime is 3505807. The next prime is 3505819. The reversal of 3505813 is 3185053.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (3505807) and next prime (3505819).

It can be written as a sum of positive squares in only one way, i.e., 3359889 + 145924 = 1833^2 + 382^2 .

It is a cyclic number.

It is not a de Polignac number, because 3505813 - 2⁹ = 3505301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3505819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1752906 + 1752907.

It is an arithmetic number, because the mean of its divisors is an integer number (1752907).

Almost surely, 2^3505813 is an apocalyptic number.

It is an amenable number.

3505813 is a deficient number, since it is larger than the sum of its proper divisors (1).

3505813 is an equidigital number, since it uses as much as digits as its factorization.

3505813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 3505813 is about 1872.3816384487. The cubic root of 3505813 is about 151.9134577766.

The spelling of 3505813 in words is "three million, five hundred five thousand, eight hundred thirteen".