3280621 has 2 divisors, whose sum is σ = 3280622. Its totient is φ = 3280620.

The previous prime is 3280603. The next prime is 3280639. The reversal of 3280621 is 1260823.

It is a balanced prime because it is at equal distance from previous prime (3280603) and next prime (3280639).

It can be written as a sum of positive squares in only one way, i.e., 3279721 + 900 = 1811^2 + 30^2 .

It is a cyclic number.

It is not a de Polignac number, because 3280621 - 2⁷ = 3280493 is a prime.

It is a Chen prime.

3280621 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3280592 and 3280601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3280661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1640310 + 1640311.

It is an arithmetic number, because the mean of its divisors is an integer number (1640311).

Almost surely, 2^3280621 is an apocalyptic number.

It is an amenable number.

3280621 is a deficient number, since it is larger than the sum of its proper divisors (1).

3280621 is an equidigital number, since it uses as much as digits as its factorization.

3280621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 3280621 is about 1811.2484644576. The cubic root of 3280621 is about 148.5885530328.

The spelling of 3280621 in words is "three million, two hundred eighty thousand, six hundred twenty-one".