3278641 has 4 divisors (see below), whose sum is σ = 3282292. Its totient is φ = 3274992.

The previous prime is 3278629. The next prime is 3278651. The reversal of 3278641 is 1468723.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1147041 + 2131600 = 1071^2 + 1460^2 .

It is a cyclic number.

It is not a de Polignac number, because 3278641 - 2⁵ = 3278609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3278651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 571 + ... + 2623.

It is an arithmetic number, because the mean of its divisors is an integer number (820573).

Almost surely, 2^3278641 is an apocalyptic number.

It is an amenable number.

3278641 is a deficient number, since it is larger than the sum of its proper divisors (3651).

3278641 is a wasteful number, since it uses less digits than its factorization.

3278641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3650.

The product of its digits is 8064, while the sum is 31.

The square root of 3278641 is about 1810.7017976464. The cubic root of 3278641 is about 148.5586537604.

The spelling of 3278641 in words is "three million, two hundred seventy-eight thousand, six hundred forty-one".