3305661 has 8 divisors (see below), whose sum is σ = 4416864. Its totient is φ = 2199120.

The previous prime is 3305657. The next prime is 3305671. The reversal of 3305661 is 1665033.

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

It is not a de Polignac number, because 3305661 - 2² = 3305657 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3305611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1150 + ... + 2816.

It is an arithmetic number, because the mean of its divisors is an integer number (552108).

Almost surely, 2^3305661 is an apocalyptic number.

It is an amenable number.

3305661 is a deficient number, since it is larger than the sum of its proper divisors (1111203).

3305661 is a wasteful number, since it uses less digits than its factorization.

3305661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2331.

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 3305661 is about 1818.1476837705. The cubic root of 3305661 is about 148.9656392698.

The spelling of 3305661 in words is "three million, three hundred five thousand, six hundred sixty-one".