3660655631 has 2 divisors, whose sum is σ = 3660655632. Its totient is φ = 3660655630.

The previous prime is 3660655613. The next prime is 3660655637. The reversal of 3660655631 is 1365560663.

Together with previous prime (3660655613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3660655631 is a prime.

It is a super-2 number, since 2×3660655631² = 26800799297544016322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3660655637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1830327815 + 1830327816.

It is an arithmetic number, because the mean of its divisors is an integer number (1830327816).

Almost surely, 2^3660655631 is an apocalyptic number.

3660655631 is a deficient number, since it is larger than the sum of its proper divisors (1).

3660655631 is an equidigital number, since it uses as much as digits as its factorization.

3660655631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 291600, while the sum is 41.

The square root of 3660655631 is about 60503.3522294426. The cubic root of 3660655631 is about 1541.1785590847.

The spelling of 3660655631 in words is "three billion, six hundred sixty million, six hundred fifty-five thousand, six hundred thirty-one".