3661086257 has 2 divisors, whose sum is σ = 3661086258. Its totient is φ = 3661086256.

The previous prime is 3661086217. The next prime is 3661086271. The reversal of 3661086257 is 7526801663.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3378980641 + 282105616 = 58129^2 + 16796^2 .

It is a cyclic number.

It is not a de Polignac number, because 3661086257 - 2²⁰ = 3660037681 is a prime.

It is not a weakly prime, because it can be changed into another prime (3661086217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1830543128 + 1830543129.

It is an arithmetic number, because the mean of its divisors is an integer number (1830543129).

Almost surely, 2^3661086257 is an apocalyptic number.

It is an amenable number.

3661086257 is a deficient number, since it is larger than the sum of its proper divisors (1).

3661086257 is an equidigital number, since it uses as much as digits as its factorization.

3661086257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 3661086257 is about 60506.9108201700. The cubic root of 3661086257 is about 1541.2389895652.

The spelling of 3661086257 in words is "three billion, six hundred sixty-one million, eighty-six thousand, two hundred fifty-seven".