3345661 has 4 divisors (see below), whose sum is σ = 3649824. Its totient is φ = 3041500.

The previous prime is 3345659. The next prime is 3345679. The reversal of 3345661 is 1665433.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 3345661 - 2¹ = 3345659 is a prime.

It is a super-2 number, since 2×3345661² = 22386895053842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3345611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152065 + ... + 152086.

It is an arithmetic number, because the mean of its divisors is an integer number (912456).

Almost surely, 2^3345661 is an apocalyptic number.

It is an amenable number.

3345661 is a deficient number, since it is larger than the sum of its proper divisors (304163).

3345661 is a wasteful number, since it uses less digits than its factorization.

3345661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304162.

The product of its digits is 6480, while the sum is 28.

The square root of 3345661 is about 1829.1148132362. The cubic root of 3345661 is about 149.5640825485.

It can be divided in two parts, 334 and 5661, that added together give a palindrome (5995).

The spelling of 3345661 in words is "three million, three hundred forty-five thousand, six hundred sixty-one".