3228961 has 2 divisors, whose sum is σ = 3228962. Its totient is φ = 3228960.

The previous prime is 3228959. The next prime is 3228977. The reversal of 3228961 is 1698223.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2307361 + 921600 = 1519^2 + 960^2 .

It is a cyclic number.

It is not a de Polignac number, because 3228961 - 2¹ = 3228959 is a prime.

Together with 3228959, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3228161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1614480 + 1614481.

It is an arithmetic number, because the mean of its divisors is an integer number (1614481).

Almost surely, 2^3228961 is an apocalyptic number.

3228961 is the 961-st centered heptagonal number.

It is an amenable number.

3228961 is a deficient number, since it is larger than the sum of its proper divisors (1).

3228961 is an equidigital number, since it uses as much as digits as its factorization.

3228961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 31.

The square root of 3228961 is about 1796.9309947797. The cubic root of 3228961 is about 147.8044806782.

The spelling of 3228961 in words is "three million, two hundred twenty-eight thousand, nine hundred sixty-one".