3475981 has 2 divisors, whose sum is σ = 3475982. Its totient is φ = 3475980.

The previous prime is 3475951. The next prime is 3476017. The reversal of 3475981 is 1895743.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3006756 + 469225 = 1734^2 + 685^2 .

It is a cyclic number.

It is not a de Polignac number, because 3475981 - 2⁵ = 3475949 is a prime.

It is a super-2 number, since 2×3475981² = 24164887824722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3475981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3475931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1737990 + 1737991.

It is an arithmetic number, because the mean of its divisors is an integer number (1737991).

Almost surely, 2^3475981 is an apocalyptic number.

It is an amenable number.

3475981 is a deficient number, since it is larger than the sum of its proper divisors (1).

3475981 is an equidigital number, since it uses as much as digits as its factorization.

3475981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 37.

The square root of 3475981 is about 1864.3982943567. The cubic root of 3475981 is about 151.4813375843.

It can be divided in two parts, 347 and 5981, that added together give a triangular number (6328 = T₁₁₂).

The spelling of 3475981 in words is "three million, four hundred seventy-five thousand, nine hundred eighty-one".