3361781 has 2 divisors, whose sum is σ = 3361782. Its totient is φ = 3361780.

The previous prime is 3361759. The next prime is 3361793. The reversal of 3361781 is 1871633.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2002225 + 1359556 = 1415^2 + 1166^2 .

It is a cyclic number.

It is not a de Polignac number, because 3361781 - 2¹⁰ = 3360757 is a prime.

It is a super-2 number, since 2×3361781² = 22603142983922, which contains 22 as substring.

It is equal to p₂₄₀₉₇₇ and since 3361781 and 240977 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3361741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1680890 + 1680891.

It is an arithmetic number, because the mean of its divisors is an integer number (1680891).

Almost surely, 2^3361781 is an apocalyptic number.

It is an amenable number.

3361781 is a deficient number, since it is larger than the sum of its proper divisors (1).

3361781 is an equidigital number, since it uses as much as digits as its factorization.

3361781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 29.

The square root of 3361781 is about 1833.5160212008. The cubic root of 3361781 is about 149.8039067242.

The spelling of 3361781 in words is "three million, three hundred sixty-one thousand, seven hundred eighty-one".