3321605 has 8 divisors (see below), whose sum is σ = 4555392. Its totient is φ = 2277648.

The previous prime is 3321589. The next prime is 3321607. The reversal of 3321605 is 5061233.

3321605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3321605 - 2⁴ = 3321589 is a prime.

It is a super-2 number, since 2×3321605² = 22066119552050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3321607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47417 + ... + 47486.

It is an arithmetic number, because the mean of its divisors is an integer number (569424).

Almost surely, 2^3321605 is an apocalyptic number.

3321605 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3321605 is a deficient number, since it is larger than the sum of its proper divisors (1233787).

3321605 is an equidigital number, since it uses as much as digits as its factorization.

3321605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94915.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 3321605 is about 1822.5270917054. The cubic root of 3321605 is about 149.2047543090.

Adding to 3321605 its reverse (5061233), we get a palindrome (8382838).

The spelling of 3321605 in words is "three million, three hundred twenty-one thousand, six hundred five".