3640563673 has 2 divisors, whose sum is σ = 3640563674. Its totient is φ = 3640563672.

The previous prime is 3640563659. The next prime is 3640563683. The reversal of 3640563673 is 3763650463.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3194171289 + 446392384 = 56517^2 + 21128^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3640563673 is a prime.

It is not a weakly prime, because it can be changed into another prime (3640563623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1820281836 + 1820281837.

It is an arithmetic number, because the mean of its divisors is an integer number (1820281837).

Almost surely, 2^3640563673 is an apocalyptic number.

It is an amenable number.

3640563673 is a deficient number, since it is larger than the sum of its proper divisors (1).

3640563673 is an equidigital number, since it uses as much as digits as its factorization.

3640563673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 43.

The square root of 3640563673 is about 60337.0837296600. The cubic root of 3640563673 is about 1538.3537353681.

The spelling of 3640563673 in words is "three billion, six hundred forty million, five hundred sixty-three thousand, six hundred seventy-three".