3280657 has 2 divisors, whose sum is σ = 3280658. Its totient is φ = 3280656.

The previous prime is 3280649. The next prime is 3280661. The reversal of 3280657 is 7560823.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3041536 + 239121 = 1744^2 + 489^2 .

It is an emirp because it is prime and its reverse (7560823) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3280657 - 2³ = 3280649 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3280687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1640328 + 1640329.

It is an arithmetic number, because the mean of its divisors is an integer number (1640329).

Almost surely, 2^3280657 is an apocalyptic number.

It is an amenable number.

3280657 is a deficient number, since it is larger than the sum of its proper divisors (1).

3280657 is an equidigital number, since it uses as much as digits as its factorization.

3280657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 3280657 is about 1811.2584023270. The cubic root of 3280657 is about 148.5890965446.

The spelling of 3280657 in words is "three million, two hundred eighty thousand, six hundred fifty-seven".