3243665 has 8 divisors (see below), whose sum is σ = 3927528. Its totient is φ = 2571520.

The previous prime is 3243649. The next prime is 3243677. The reversal of 3243665 is 5663423.

It can be written as a sum of positive squares in 4 ways, for example, as 64 + 3243601 = 8^2 + 1801^2 .

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

It is not a de Polignac number, because 3243665 - 2⁴ = 3243649 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2306 + ... + 3435.

It is an arithmetic number, because the mean of its divisors is an integer number (490941).

Almost surely, 2^3243665 is an apocalyptic number.

It is an amenable number.

3243665 is a deficient number, since it is larger than the sum of its proper divisors (683863).

3243665 is a wasteful number, since it uses less digits than its factorization.

3243665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5859.

The product of its digits is 12960, while the sum is 29.

The square root of 3243665 is about 1801.0177678191. The cubic root of 3243665 is about 148.0284976777.

The spelling of 3243665 in words is "three million, two hundred forty-three thousand, six hundred sixty-five".