3643747 has 2 divisors, whose sum is σ = 3643748. Its totient is φ = 3643746.

The previous prime is 3643733. The next prime is 3643751. The reversal of 3643747 is 7473463.

It is a strong prime.

It is an emirp because it is prime and its reverse (7473463) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3643747 - 2¹⁵ = 3610979 is a prime.

It is not a weakly prime, because it can be changed into another prime (3643147) 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, 1821873 + 1821874.

It is an arithmetic number, because the mean of its divisors is an integer number (1821874).

Almost surely, 2^3643747 is an apocalyptic number.

3643747 is a deficient number, since it is larger than the sum of its proper divisors (1).

3643747 is an equidigital number, since it uses as much as digits as its factorization.

3643747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 34.

The square root of 3643747 is about 1908.8601310730. The cubic root of 3643747 is about 153.8801986131.

The spelling of 3643747 in words is "three million, six hundred forty-three thousand, seven hundred forty-seven".