3664523657 has 2 divisors, whose sum is σ = 3664523658. Its totient is φ = 3664523656.

The previous prime is 3664523633. The next prime is 3664523677. The reversal of 3664523657 is 7563254663.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3182765056 + 481758601 = 56416^2 + 21949^2 .

It is a cyclic number.

It is not a de Polignac number, because 3664523657 - 2⁶ = 3664523593 is a prime.

It is not a weakly prime, because it can be changed into another prime (3664523677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1832261828 + 1832261829.

It is an arithmetic number, because the mean of its divisors is an integer number (1832261829).

Almost surely, 2^3664523657 is an apocalyptic number.

It is an amenable number.

3664523657 is a deficient number, since it is larger than the sum of its proper divisors (1).

3664523657 is an equidigital number, since it uses as much as digits as its factorization.

3664523657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2721600, while the sum is 47.

The square root of 3664523657 is about 60535.3091757199. The cubic root of 3664523657 is about 1541.7211959688.

The spelling of 3664523657 in words is "three billion, six hundred sixty-four million, five hundred twenty-three thousand, six hundred fifty-seven".