3283681 has 2 divisors, whose sum is σ = 3283682. Its totient is φ = 3283680.

The previous prime is 3283663. The next prime is 3283711. The reversal of 3283681 is 1863823.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3240000 + 43681 = 1800^2 + 209^2 .

It is a cyclic number.

It is not a de Polignac number, because 3283681 - 2¹⁵ = 3250913 is a prime.

It is a super-2 number, since 2×3283681² = 21565121819522, which contains 22 as substring.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (3283381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1641840 + 1641841.

It is an arithmetic number, because the mean of its divisors is an integer number (1641841).

Almost surely, 2^3283681 is an apocalyptic number.

It is an amenable number.

3283681 is a deficient number, since it is larger than the sum of its proper divisors (1).

3283681 is an equidigital number, since it uses as much as digits as its factorization.

3283681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 31.

The square root of 3283681 is about 1812.0929887840. The cubic root of 3283681 is about 148.6347373455.

The spelling of 3283681 in words is "three million, two hundred eighty-three thousand, six hundred eighty-one".