3641647 has 2 divisors, whose sum is σ = 3641648. Its totient is φ = 3641646.

The previous prime is 3641641. The next prime is 3641653. The reversal of 3641647 is 7461463.

It is a balanced prime because it is at equal distance from previous prime (3641641) and next prime (3641653).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3641647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3641641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1820823 + 1820824.

It is an arithmetic number, because the mean of its divisors is an integer number (1820824).

Almost surely, 2^3641647 is an apocalyptic number.

3641647 is a deficient number, since it is larger than the sum of its proper divisors (1).

3641647 is an equidigital number, since it uses as much as digits as its factorization.

3641647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 31.

The square root of 3641647 is about 1908.3099853011. The cubic root of 3641647 is about 153.8506310171.

It can be divided in two parts, 36416 and 47, that added together give a palindrome (36463).

The spelling of 3641647 in words is "three million, six hundred forty-one thousand, six hundred forty-seven".