3221700649 has 2 divisors, whose sum is σ = 3221700650. Its totient is φ = 3221700648.

The previous prime is 3221700541. The next prime is 3221700679. The reversal of 3221700649 is 9460071223.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2346724249 + 874976400 = 48443^2 + 29580^2 .

It is a cyclic number.

It is not a de Polignac number, because 3221700649 - 2¹⁵ = 3221667881 is a prime.

It is not a weakly prime, because it can be changed into another prime (3221700679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1610850324 + 1610850325.

It is an arithmetic number, because the mean of its divisors is an integer number (1610850325).

Almost surely, 2^3221700649 is an apocalyptic number.

It is an amenable number.

3221700649 is a deficient number, since it is larger than the sum of its proper divisors (1).

3221700649 is an equidigital number, since it uses as much as digits as its factorization.

3221700649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 3221700649 is about 56760.0268586970. The cubic root of 3221700649 is about 1476.9361759498.

The spelling of 3221700649 in words is "three billion, two hundred twenty-one million, seven hundred thousand, six hundred forty-nine".