3660647 has 2 divisors, whose sum is σ = 3660648. Its totient is φ = 3660646.

The previous prime is 3660637. The next prime is 3660653. The reversal of 3660647 is 7460663.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3660647 - 2¹² = 3656551 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3660607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1830323 + 1830324.

It is an arithmetic number, because the mean of its divisors is an integer number (1830324).

Almost surely, 2^3660647 is an apocalyptic number.

3660647 is a deficient number, since it is larger than the sum of its proper divisors (1).

3660647 is an equidigital number, since it uses as much as digits as its factorization.

3660647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 3660647 is about 1913.2817356573. The cubic root of 3660647 is about 154.1177347833.

The spelling of 3660647 in words is "three million, six hundred sixty thousand, six hundred forty-seven".