3604681 has 2 divisors, whose sum is σ = 3604682. Its totient is φ = 3604680.

The previous prime is 3604631. The next prime is 3604693. The reversal of 3604681 is 1864063.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3549456 + 55225 = 1884^2 + 235^2 .

It is a cyclic number.

It is not a de Polignac number, because 3604681 - 2⁷ = 3604553 is a prime.

It is a super-2 number, since 2×3604681² = 25987450223522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3604621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1802340 + 1802341.

It is an arithmetic number, because the mean of its divisors is an integer number (1802341).

Almost surely, 2^3604681 is an apocalyptic number.

It is an amenable number.

3604681 is a deficient number, since it is larger than the sum of its proper divisors (1).

3604681 is an equidigital number, since it uses as much as digits as its factorization.

3604681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 3604681 is about 1898.5997471821. The cubic root of 3604681 is about 153.3282853831.

It can be divided in two parts, 360 and 4681, that added together give a square (5041 = 71²).

The spelling of 3604681 in words is "three million, six hundred four thousand, six hundred eighty-one".