3663707321 has 2 divisors, whose sum is σ = 3663707322. Its totient is φ = 3663707320.

The previous prime is 3663707297. The next prime is 3663707389. The reversal of 3663707321 is 1237073663.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3655895296 + 7812025 = 60464^2 + 2795^2 .

It is a cyclic number.

It is not a de Polignac number, because 3663707321 - 2²⁶ = 3596598457 is a prime.

It is not a weakly prime, because it can be changed into another prime (3663707221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1831853660 + 1831853661.

It is an arithmetic number, because the mean of its divisors is an integer number (1831853661).

Almost surely, 2^3663707321 is an apocalyptic number.

It is an amenable number.

3663707321 is a deficient number, since it is larger than the sum of its proper divisors (1).

3663707321 is an equidigital number, since it uses as much as digits as its factorization.

3663707321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 38.

The square root of 3663707321 is about 60528.5661568156. The cubic root of 3663707321 is about 1541.6067057832.

The spelling of 3663707321 in words is "three billion, six hundred sixty-three million, seven hundred seven thousand, three hundred twenty-one".