3475781 has 2 divisors, whose sum is σ = 3475782. Its totient is φ = 3475780.

The previous prime is 3475757. The next prime is 3475799. The reversal of 3475781 is 1875743.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3363556 + 112225 = 1834^2 + 335^2 .

It is an emirp because it is prime and its reverse (1875743) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3475781 is a prime.

It is a super-2 number, since 2×3475781² = 24162107119922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3475711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1737890 + 1737891.

It is an arithmetic number, because the mean of its divisors is an integer number (1737891).

Almost surely, 2^3475781 is an apocalyptic number.

It is an amenable number.

3475781 is a deficient number, since it is larger than the sum of its proper divisors (1).

3475781 is an equidigital number, since it uses as much as digits as its factorization.

3475781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23520, while the sum is 35.

The square root of 3475781 is about 1864.3446569774. The cubic root of 3475781 is about 151.4784322320.

The spelling of 3475781 in words is "three million, four hundred seventy-five thousand, seven hundred eighty-one".