3583721 has 2 divisors, whose sum is σ = 3583722. Its totient is φ = 3583720.

The previous prime is 3583717. The next prime is 3583739. The reversal of 3583721 is 1273853.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3013696 + 570025 = 1736^2 + 755^2 .

It is a cyclic number.

It is not a de Polignac number, because 3583721 - 2² = 3583717 is a prime.

It is not a weakly prime, because it can be changed into another prime (3583711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1791860 + 1791861.

It is an arithmetic number, because the mean of its divisors is an integer number (1791861).

Almost surely, 2^3583721 is an apocalyptic number.

It is an amenable number.

3583721 is a deficient number, since it is larger than the sum of its proper divisors (1).

3583721 is an equidigital number, since it uses as much as digits as its factorization.

3583721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 29.

The square root of 3583721 is about 1893.0718422712. The cubic root of 3583721 is about 153.0305234786.

The spelling of 3583721 in words is "three million, five hundred eighty-three thousand, seven hundred twenty-one".